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Die invloed van drie tussenrybewerkingsmetodes op opbrengs en chemiese samestelling van droëlandlusern op die oos‐transvaalse hoëveld.
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: L.T. Botha --- , M. de Villiers --- , W.T. Oosthuizen --- ,Drie tussenrybewerkingsmetodes, skeurploeg (40 — 50 cm diep) skoffel (5 — H) cm diep) en kontrole (geen bewerking) is gedurende die 1982/83 en 1983/84 groeiseisoene in ‘n bestaande lusernstand uitgevoer. Hierdie lusern was in 0,9 m rye gevestig. Tye van... -
Evaluation of the grazing potential of grass species in Tarchonanthus veld of the northern cape1
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.H. Fourie --- Department of Agriculture (Free State Region), D.P.J. Opperman --- Department of Pasture Science, B.R. Roberts --- Department of Pasture Science,The grazing value of the seven most prominent grass species in Tarchonanthus‐limeveld was investigated from 1977 to 1981. -
Herbage intake by cattle on tarchonanthus veld in the Northern Cape as affected by stocking rate and grazing system1
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J H Fourie --- Department of Agriculture (Free State Region), E A N Engels --- Department of Agriculture (Free State Region), B R Roberts --- Department of Pasture Science,In a trial with young Bonsmara cattle, four different stocking rates (10, 7, 6 and 4 ha/large stock unit) were applied in both a rotational and continuous grazing system. Feed intake was estimated during spring, summer, autumn and winter for... -
Identification of companion legumes for midmar Italian ryegrass
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: H.R.H. Smith --- Department of Agriculture (Transvaal Region),In a preliminary investigation seven legumes were planted alone and in combination with Lolium multiflorum cv. Midmar. The pure stands of legumes were harvested at either four, five or six week cutting intervals, while the pure stands of Lolium multiflorum... -
Seasonal changes in the quality of diet selected by cattle grazing the natal sour sandveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.J. O'Reagain --- Dept. Agriculture and Water Supply, M.T. Mentis --- Centre for Resource Ecology,Seasonal changes in dietary quality were measured using steers fistulated at the oesophagus. From spring through to winter, crude protein (CP), in vitro digestibility (IVD) and leaf percentage in the diet declined significantly while percentage dead material increased significantly. Consumption... -
The effect of continuous and rotational grazing of sourveld on the selection of plant fractions by simmentaler heifers
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: U.P. Kreuter --- Department of Grassland Science, N.M. Tainton --- Department of Grassland Science,In a grazing trial conducted at the Kokstad Agricultural Research Station, the selection of six plant fractions by cattle grazing sourveld was investigated. Relations between the selectivity of the cattle and the dry matter digestibility (DMD) and crude protein (CP)... -
Voorlopige evaluasie van sporobolus fimbriatus as aangeplante weiding in die sentrale oranje‐vrystaat
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: L.G. du Pisani --- , I.W. Knight --- ,Die potensiaal van Sporobolus fimbriatus as aangeplante weiding is ten opsigte van relatiewe groeitempo, kumulatiewe groei, droëmateriaalproduksie, weikapasiteit, blaar : stingel verhouding en kwaliteit (ruproteïen en verteerbaarheid) geëvalueer. -
The use of near infra‐red reflectance spectroscopy for the determination of plant nitrogen
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: R.J. Eckard --- Department of Grassland Science, N. Miles --- Department of Grassland Science, N.M. Tainton --- Department of Grassland Science,A Near Infra‐Red Reflectance Spectrophotometer was calibrated to analyse Italian ryegrass for protein nitrogen (N). Rye‐grass samples having a wide range in N content were analysed by standard “wet” chemistry techniques and the resulting data used to calibrate the Near... -
The quality of herbage ingested by cattle in rotationally grazed semi‐arid grassveld of the eastern Cape
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.E. Danckwerts --- Department of Agriculture (Eastern Cape Region), Republic of South AfricaOesophageal fistulated steers were used to sample herbage daily during periods of occupation on veld in good and moderate condition. Forage quality was assessed in terms of in vitro dry matter digestibility and digestible crude protein. The quality of herbage... -
The effect of plant structure on the acceptability of different grass species to cattle
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.J. O'Reagain --- Department of Agriculture and Water Supply, Republic of South Africa M.T. Mentis --- Department of Botany, Republic of South AfricaThe changes in the acceptability to cattle of nine indigenous grass species over the grazing season were related to nine characteristics of the species. Acceptability was positively related to tuft diameter, leaf percentage, leaf table height and leaf crude protein,... -
Influence of phosphatic fertilization on the yield and chemical composition of grass pasture
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N.F.G. Rethman --- Department of Agriculture & Water Supply, Republic of South Africa B.H. Beukes --- Department of Agriculture & Water Supply, Republic of South AfricaWhile the distribution of P fertilizer had an insignificant influence on the DM production of a grass pasture over a three‐year period, the level of both N and P was highly significant. Growth patterns were unaffected by any of the... -
The effects of continuous and rotational grazing of sourveld on the quality of herbage selected by Simmentaler heifers
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: U.P. Kreuter --- Department of Grassland Science, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaA grazing trial was conducted at the Kokstad Agricultural Station to compare the dry matter digestibility (DMD) and crude protein content (CP) of diets selected by four fistulated cattle which were continuously and rotationally grazing sourveld. Two stocking rates of... -
The relationship between sward structure, ingestive behaviour and dietary quality in cattle grazing a Chloris gayana pasture
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.J. O'Reagain --- Department of Agricultural Development, Republic of South AfricaThe relationship between sward structure, ingestive behaviour (bite size, biting rate and intake rate) and dietary crude protein (CP) content was studied on a Chloris gayana pasture at different growth stages using oesopha‐geally‐fistulated steers. As the pasture matured, leaf table... -
The relationship between the nitrogen and nitrate content and nitrate toxicity potential of Lolium multiflorum
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: R.J. Eckard --- Department of Agriculture and Water Supply (Natal Region), Republic of South AfricaThe interrelationships between the nitrate‐N and nitrogen content and dry matter yield of Midmar ryegrass (Lolium multiflorum cv. Midmar) were investigated. Data were collected from N fertility trials, from two seasons (1985 and 1987) on four soil sites (Metz, Griffin,... -
The effect of veld condition on the quality of diet selected by cattle grazing the Natal Sour Sandveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.J. O'Reagain --- Department of Agricultural Development, Republic of South Africa M.T. Mentis --- Department of Botany, Republic of South AfricaThe quality of diet selected by steers fistulated at the oesophagous was related to veld condition in a simulated rotational grazing system on the Natal Sour Sandveld. Six camps, ranging in veld condition score from 8,5 to 53%, were grazed... -
Seasonal changes in nutrient content under three defoliation treatments in two coastal grassland communities of Transkei
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.M. Shackleton --- Department of Botany, Transkei M.T. Mentis --- Department of Botany, Republic of South AfricaChanges in nutrient concentrations were monitored over a two‐year period in two coastal grassland communities. Dry matter digestibility, crude protein, phosphorus, potassium, calcium and magnesium were determined from hand‐clipped samples of experimental treatments; namely, burning with and without subsequent grazing... -
The accumulation of nitrate in Kikuyu grass (Pennisetum clandestinum Hochst)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.P. Marais --- Biochemistry Section, Republic of South Africa D.L. Figenschou --- Biochemistry Section, Republic of South Africa C. Dennison --- Department of Biochemistry, Republic of South AfricaA study was made of some of the factors responsible for the accumulation of excessive amounts of nitrate in certain Kikuyu pastures. Accumulation, mainly in stem tissue, is the nett result of several contributing processes. Climatic conditions causing a decline... -
Variasie in lipied- en proteïeninhoud van sonneblomsaad en oliekoekmele in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.A. Smith --- Departement Veekunde, Republiek van Suid-Afrika J.P. Hayes --- Departement Pluimveekunde, Republiek van Suid-Afrika Naomi Smith --- Navorsingsinstituut vir Vee- en Suiwelkunde, Republiek van Suid-AfrikaDie variasie in die chemiese samestelling van sonneblom- saad, wat uit verskillende areas aan oliepersers gelewer is, en die invloed daarvan op die samestelling van die geproduseerde oliekoekmele is in die studie ondersoek. Die ontleding van die sade het 'n... -
Provisional assessment of quality components in lucerne (Medicago sativa) and white clover (Trifolium repens) using a near infrared reflectance spectrophotometer
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MariéA. Stoltz --- Transvaal Region, Department of Agriculture and Water Supply, Republic of South AfricaA near infrared reflectance spectrophotometer (NIRS) with tilting filters was calibrated for the determination of the forage quality components, crude protein (CP), acid detergent fibre (ADF), neutral detergent fibre (NDF), in vitro organic matter digestibility (IVOMD), dry matter (DM) and... -
The compatibility of Trifolium resupinatum cv. Shaftal Maral and Lolium multiflorum (type Westerwolds) cv. Energa in mixtures as affected by nitrogen application and different seeding rates
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van den Berg --- Department of Agricultural Development, Republic of South Africa A.J. Kruger --- Department of Agricultural Development, Republic of South Africa J.V. Lello --- Department of Agricultural Development, Republic of South AfricaNitrogen fertilizer was applied at four different rates to pure and mixed stands of irrigated Trifolium resupinatum and Lolium multiflorum to study their compatibility. Dry matter production, crude protein content, crude protein production and the Land Equivalent Ratio were determined... -
Drought-related protein synthesis in cotton
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. van der Mescht --- , Republic of South Africa J.A. de Ronde --- , Republic of South AfricaThe changes in protein profiles of six cotton cultivars subjected to osmotic stress were examined. Osmotic stress was applied by incubating leaf segments in mannitol. The efficiency of protein synthesis decreased with increasing concentrations of mannitol. Drought-related protein synthesis during... -
Heat-shock protein synthesis in cotton is cultivar dependent
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.A. de Ronde --- , Republic of South Africa A. van der Mescht W.A. Cress --- Department of Botany, Republic of South AfricaThe synthesis of heat-related proteins in six cotton cultivars was examined. The protein profiles of heat-stressed plants were highly cultivar specific. Heat-related proteins did not result from protein degradation. Recovery to normal protein synthesis occurred within an hour after the... -
Protein turnover: possible contributing factor in determining drought tolerance in Nicotiana tabacum L.
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. van Rensburg --- Department of Plant and Soil Sciences, Republic of South Africa G. H.J. Krüger --- Department of Plant and Soil Sciences, Republic of South AfricaDrought stress-induced changes in the water-soluble protein concentration and total number of sulphydryl (-SH) groups were monitored under controlled environmental conditions in four tobacco cultivars (Nicotiana tabacum L.) with different drought tolerances. The drought stress ranged from light (-0.52 MPa)... -
Comparison of protein extraction procedures to assess the effect of quantitative protein composition on the bread-making quality of South African winter wheat cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D. van Lill --- Small Grain Centre, Republic of South Africa B.S. Wentzel --- Small Grain Centre, Republic of South Africa MarieF. Smith --- , Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South AfricaA suitable technique for the extraction of wheat flour protein fractions was pursued to assess the effect of quantitative protein composition on the bread-making quality of winter wheat cultivars on a large scale. Nine procedures involving the use of different... -
Identification of tall fescue grass cultivars by sodium dodecyl sulphate and acid polyacrylamide gel electrophoresis
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.E. Hierse --- , Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South Africa M. Bosman --- Department of Botany, Republic of South AfricaProtein banding patterns of seed obtained by sodium dodecyl sulphate Polyacrylamide gel electrophoresis (SDS-PAGE) or acid Polyacrylamide gel electrophoresis (A-PAGE) were used to distinguish between different tall fescue (Festuca arundinacea Shreb.) grass cultivars. An electrophoretic formula was determined for each... -
Use of the SDSS test to predict the protein content and bread volume of wheat cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: O.T. de Villiers --- Department of Botany, Republic of South Africa E.W. Laubscher --- Centre for Cereal Research, Department of Agronomy and Pastures, Republic of South AfricaThe relationship between the sodium dodecyl sulphate sedimentation volume (SDSS test) and the protein content and bread volume of wheat cultivars was determined to ascertain whether the SDSS test could be used to predict these parameters of baking quality. This... -
Multivariate assessment of environmental effects on hard red winter wheat. II. Canonical correlation and canonical variate analysis of yield, biochemical and bread-making characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D. van Lili --- Small Grain Centre, Republic of South Africa J.L. Purchase --- Small Grain Centre, Republic of South Africa MarieF. Smith --- , Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa O.T. De Villiers --- Department of Botany, Republic of South AfricaThe inconsistent production of winter wheat with acceptable bread-making quality in the Free State reduces the commercial value of the wheat crop. In the second part of this study, canonical correlation analysis was used to determine to what extent variation... -
Synthesis of heat-shock proteins in six cotton cultivars at different heat treatments
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.A. de Ronde --- , Republic of South Africa W.A. Cress --- Department of Botany, Republic of South AfricaChanges in protein synthesis in leaf tissue of six cotton cultivars were studied by comparing the heat-shock protein patterns synthesized at different heat treatments. Leaf tissue responded to thermotolerance treatments by synthesizing a specific set of proteins for each treatment... -
Extraction and electrophoretic separation of proteins from leaves of scions and rootstocks of Vitis cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E.W. le Grange --- , Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South AfricaProteins were extracted and separated by SDS-PAGE from leaves of scions and rootstocks of different Vitis cultivars. Banding patterns were used to identify the different cultivars after extraction of the proteins with a medium containing Tris-HCI (0.68 M, pH 7.8),... -
Identification of Cyclopia species (‘Heuningbostee’) using Polyacrylamide gel electrophoresis
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: O.T. de Villiers --- Department of Botany, South Africa M. Bosman --- Department of Botany, South Africa J.H. de Lange --- , South AfricaProtein banding patterns of seed obtained by sodium dodecyl sulphate Polyacrylamide get electrophoresis (SDS-PAGE) or acid polycrylamide gel electrophoresis (A-PAGE) were used to distinguish between different Cyclopia species (‘heuningbostee’). An electrophoretic formula was determined for each species using relative band... -
The effect of soil fertility on the contribution of main stem, tillers and kernel position to grain yield and grain protein content of wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.A. Metho --- Department of Plant Production and Soil Science, Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South Africa E.A. Beyers --- Department of Plant Production and Soil Science, Republic of South AfricaThe relative contribution of main stems and tillers, as well as the relative contribution of first, second and third kernels in spikeiets to grain yield and grain protein content, is seldom quantified. The grain yield of main stems, tillers and... -
Die sif van sonneblomsaad vir die verbetering van olie- en proteienherwinning
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republiek van Suid-Afrika H.L. Loubser --- , Republiek van Suid-Afrika P.S. Hammes --- Departement Plantproduksie en Grondkunde, Republiek van Suid-AfrikaVoor die olie van sonneblomsaad (Helianthus annuus L.) uitgepers word, word dit ontdop om onder andere die kwaliteit van die oliekoek so hoog moontlik te kry. Dopbaarheid, of die gemak van ontdopping, het 'n positiewe verwantskap met saadgrootte. Aangesien saadmonsters... -
Investigation of the suitability of Western and Southern Cape wheat flour for production of traditional South African steamed bread
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. Manley --- Department of Food Science, Republic of South Africa M.M. Nel --- Department of Agronomy and Pastures, Republic of South AfricaDue to a lack of electrical ovens, it is often found that in the households of the lower-income communities, a home-made steamed bread is prepared in a saucepan on a gas cooker or an open fire. The requirements of flour... -
The effect of plant population on the quality of sunflower seed for processing
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South AfricaAmong other disadvantages, low hullability of sunflower seed results in oil cake with a high fibre and low protein content. Hullability is known to increase with increased seed size. Seed size generally decreases with an increase in plant density. The... -
The effect of environment and cultivar on sunflower seed. II. Composition and processing quality
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South AfricaThe processing quality of sunflower seed is determined by its oil yield, oil cake yield and oil cake composition. Quality of the oil cake is determined by its protein and crude fibre content. Seed composition is affected by both cultivar... -
Using different sample holders in determining protein and moisture content in whole wheat flour by means of Fourier transform near infrared (FT-NIR) spectroscopy
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. van Zyl --- Department of Food Science, Republic of South Africa M. Manley --- Department of Food Science, Republic of South Africa B.G. Osborne --- , AustraliaFourier transform near infrared (FT-NIR) spectroscopy was used to record the spectra of 92 whole wheat flour samples presented in three different sample holders. The conventional sample cup with a sapphire-glass base (provided with the spectrophotometer), borosilicate-glass vials and soda-glass... -
The use of size exclusion high performance liquid chromatography (SE-HPLC) for wheat quality prediction in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.T. Labuschagne --- Department of Plant Sciences, South Africa U. Aucamp --- , South AfricaSDS-PAGE and RP-HPLC imply a total reduction of native protein aggregates. This leads to a loss of information concerning structure, interaction and stability of protein complexes. A major advantage of SE-HPLC is its potential to work with relatively large aggregates,... -
Amaranthus tricolor L. leaf yields affected by salinity, harvesting stage and harvesting methods
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. E.M.M. Ribeiro --- Department of Agronomy, South Africa N. J.J. Combrink --- Department of Agronomy, South AfricaSingle Amaranthus tricolor seedlings were transplanted into containers filled with 5 I river sand and were fertigated with a ‘drain to waste’ system. Plants were grown in the open under warm summer conditions. Four to six daily applications of nutrient... -
Protein concentration in response to water stress in Themeda triandra Forsk
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: I.B. Oosthuizen --- Department of Animal, H.A. Snyman --- Department of Animal, J.C. Pretorius --- Department of Soil, Crop and Climate Sciences, South AfricaThe influence of water stress on the concentration of water-soluble protein growth reserves was determined during three growth stages (vegetative, pipe and reproductive) as well as in three plant parts (roots, stubble and leaves) for the indigenous C4 semi-arid grass... -
The effects of strategic nitrogen fertiliser application during the cool season on perennial ryegrass-white clover pastures in the Western Cape Province 4. Selected nutritive characteristics and mineral content
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Labuschagne --- , South Africa M.B. Hardy --- Department of Agriculture Western Cape, South Africa G.A. Agenbag --- , South AfricaThe influence of a single application of fertiliser N (0, 50, 100 and 150 kg N ha−1) applied in either autumn, early winter, late winter, early spring or late spring on selected nutritive and mineral parameters of a perennial ryegrass-white... -
Persistence of the pesticidal Bacillus thuringiensis protein expressed in Bt maize plant materials in two soils of the Central Eastern Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Muchaonyerwa --- Department of Agronomy, South Africa S.M. Waladde --- Department of Zoology, South AfricaEnvironmental effects of genetically modified plants are not yet fully understood. Experiments were conducted to determine relative amounts of the bioactive Bt protein in roots, leaves and stems of Bt maize and persistence of the protein in two soil forms... -
The effect of poor quality seed and various levels of grading factors on the germination, emergence and yield of wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Barnard --- , South Africa F.J. Calitz --- , South AfricaHigh quality seed is essential for establishing productive stands of wheat. Seed should have, amongst others, a high germination percentage, be free of seed borne diseases and should not contain any weed seed. Protein content (PC), hectolitre mass (HLM) and... -
Carbon and nitrogen mineralisation and inactivation of the Cry1Ab protein in Bt maize (MON810) residues during composting
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CK Daudu --- Department of Agronomy, South Africa P Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South Africa PNS Mnkeni --- Department of Agronomy, South AfricaA study was carried out to determine the effects of composting Bt maize residues on carbon (C) and nitrogen (N) contents and activity of the Cry1Ab protein in the compost. Residues (leaf plus stem) of mature Bt maize (DKC 7815B)... -
THE PLASMA PROTEINS OF SOME FRESHWATER FISH IN THEIR NATURAL ENVIRONMENT
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J. H.J. van Vuren --- Division of Nature Conservation, South AfricaThe plasma proteins of Cyprinus carpio (carp), Barbus holubi (yellowfish), Labeo umbratus (mudfish) and Labeo capensis (mudfish) were electrophoretically separated on polyacrylamide gels from blood samples obtained from specimens sampled during summer and winter in three different localities. Within a... -
UTILIZATION OF PLANT MATERIALS BY JUVENILE AFRICAN CATFISH (CLARIAS GARIEPINUS) AND ITS IMPORTANCE IN FISH CULTURE
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Douglas Clay --- Department of Agriculture, ZimbabweJuvenile African catfish Clarias gariepinus between 100 and 200 mm total length from Lake McIlwaine, Zimbabwe are able to digest plant proteins. The digestibility of three major plant proteins (maize, sunflower seed and soya meal) was 30,0, 65,4 and 84,3%... -
Effects of selective defoliation and height of defoliation on tiller dynamics and herbage yield of Themeda triandra in a semi-arid rangeland in Zimbabwe
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S. Dube V.E.E. GwarazimbaUnderstanding the impacts of intensity and selection of grazing on the performance of grasses is important in the management of grazing areas. It is especially important in semi-arid environments where, apart from moisture, the levels at which grasses are utilized... -
Preliminary results of a stocking rate trial in Lesotho
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: LM Mpiti-Shakhane GY Kanyama-Phiri WO Odenya JW BandaForage responses to stocking rates and seasons were determined over a one-year period. The experimental design consisted of three stocking rates namely, light (2.0ha LSU-1), moderate (1.25ha LSU-1) and heavy (0.5ha LSU-1) and four seasons (autumn, winter, spring and summer)... -
The influence of nitrogen and defoliation on the nitrogen content of Lolium multiflorum cv. Midmar
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J F Theron W L J van Rensburg H A SnymanThe response of the nitrogen content in ryegrass (Lolium multiflorum cv. Midmar) to a variation in applied nitrogen (0kg N ha-1, 150kg N ha-1, 300kg N ha-1 and 450kg N ha-1) and defoliation intervals (every 2, 4, 6 and 8... -
Fire and the dynamics of semi-arid grassland: influence on plant survival, productivity and water-use efficiency
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: H A SnymanThere is a lack of knowledge concerning the effect of fire behaviour on the vegetation dynamics of semi-arid climates. Arising from this, an investigation was initiated to characterise the behaviour of fires burning with the wind (head fire) and against... -
Impact of water stress on growth reserves and re-growth of Themeda triandra (Forssk) following defoliation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: I B Oosthuizen H A SnymanThe influence of water stress and defoliation on the concentration of total non-structural carbohydrates (TNCC) and water-soluble protein (WSPC) as growth reserves after defoliation were determined in the indigenous C4 semi-arid grass species Themeda triandra during three growth stages (vegetative,... -
Seasonal chemical composition of wall barley (Hodreum murinum L.) under sub-humid Mediterranean climate
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Moh'd KhairJ El-Shatnawi LouyZ Al-QurranWall barley (Hodreum murinum L.) is an annual cool-season grass species that grows in areas with a Mediterranean climate. It has potential as a forage source in Jordan. The objective was to determine seasonal chemical composition of wall barley grown... -
Composition changes of Atriplex nummularia L. under a Mediterranean arid environment
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Moh'd KhairJ El-Shatnawi AbdullahY AbdullahOld man saltbush (A. nummularia L.) is an adapted introduced shrub used for rangeland reclamation in Mediterranean desert shrublands. It provides valuable fodder during the long dry season and during drought. The objective of this study was to determine the... -
Using faecal profiling to assess the effects of different management types on diet quality in semi-arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KR Mbatha D WardWe used faecal profiling to assess diet quality of animals under three different management types in a semi-arid savanna, northwest of Kimberley, Northern Cape, South Africa. The levels of faecal crude protein (FCP) and faecal phosphorus (FP) of free-ranging springbok... -
Determining spatial and temporal variability in quantity and quality of vegetation for estimating the predictable sustainable stocking rate in the semi-arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KR Mbatha D WardThis study assessed the importance of spatial and temporal variation in plant quality and quantity for determining sustainable stocking rates in game, commercial and communal ranches in semi-arid savanna of the Northern Cape Province, South Africa, in wet and dry... -
The effect of Browse Plus™ on nutrient intake, rumen pH and digestibility of a sole diet of Leucaena leucocephala forage
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MM Majuva-Masafu MJ LiningtonThe purpose of this study was to determine the neutralising effect of Browse Plus™ on condensed tannins in a sole diet of Leucaena forage and how that affected feed intake, rumen environment and passage of nutrients. Partial digestion methods were... -
The effect of feeding varying levels of Leucaena leucocephala on intake and digestibility of low-quality forages in the Highveld of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MM Majuva-Masafu MJ LiningtonThe purpose of this study was to determine the effect of varying levels of Leucaena supplement on the intake, flow and digestibility of nutrients of two low-quality forages. Partial digestion methods were used. The overall results showed that the supplementation... -
Factors affecting the voluntary feed intakes of sheep grazing Pennisetum clandestinum (kikuyu) pastures: Observations in the animal
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J.P. Pienaar --- Agricultural Research Council, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South Africa J.B.J. van Ryssen --- Department of Animal and Poultry Science, Republic of South Africa J.P. Swiegers --- , Republic of South AfricaTwo experiments designed to establish possible reasons for the often‐observed low voluntary feed intake of animals grazing kikuyu pastures were conducted at two widely differing locations. Low digestibility and low rate of digestion limited feed intake only when sheep were... -
Evapotranspiration, water‐use efficiency and quality of six dryland planted pasture species and natural vegetation, in a semi‐arid rangeland1
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: H.A. Snyman --- Department of Grassland Science, Republic of South AfricaHydraulic, non‐floating lysimeters were used to determine evapotranspiration (Et) and water‐use efficiency (WUE) of several dryland planted pasture species over a period of three years. The species were Anthephora pubescens, Cenchrus ciliaris, Chloris gayana, Digitaria eriantha subsp. eriantha, Eragrosiis curvula... -
The impact of grazing on forage quality of the herbaceous vegetation in the Mamora cork oak forest, Morocco
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M. Mejjati Alami --- Department of Plant Ecology and Range Science, Morocco T.E. Bedell --- Department of Rangeland Resources, United States S.H. Sharrow --- Department of Rangeland Resources, United States O. Berkat --- Department of Plant Ecology and Range Science, MoroccoThis research was conducted in the Mamora cork oak forest of Morocco to describe the impacts of sheep grazing (no use, 35% use, 70% use) in March, April, May and June of 1987 and 1988 on seasonal changes in forage... -
Production of irrigated Trifolium repens L. under a cutting regime in the subtropical region of Gauteng, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M. Trytsman --- , Republic of South Africa A.J. Kruger --- , Republic of South Africa V.D. Wassermann --- , Republic of South Africa M.A. Stoltz --- , Republic of South AfricaThe productivity of Trifolium repens L. cv. Ladino, under irrigation in the subtropical region of Gauteng, South Africa, is unknown. The performance of T. repens was determined over five years (1981/1982 to 1985/1986), at two defoliation frequencies, four levels of... -
Effect of cutting height and frequency on Leucaena leucocephala forage and wood production
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J.P. Muir --- , MozambiqueLeucaena leucocephala is a fast‐growing tree that can provide both high quality forage and firewood. The objective of this trial was to determine the optimum height and frequency of cutting for both wood and forage production. Cutting heights at 0.3... -
Grass species composition, yield and quality under and outside tree crowns in a semi‐arid rangeland in south‐western Zimbabwe
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C.S. Moyo --- , Zimbabwe B.M. Campbell --- Institute of Environmental Studies, ZimbabweA two‐year study was conducted in lightly grazed areas of Matopos Research Station, Zimbabwe, to evaluate the impact of widely spaced trees on understorey grass composition, yield and quality. The study trees were Terminalia sericea and Acacia karroo. Ordination techniques... -
Spring and autumn nitrogen fertiliser effects, with and without phosphorus, potassium and sulphur, on dairy pastures: Pasture nutritive value and mineral content
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.R. McKenzie --- Department of Natural Resources and Environment, Australia J.L. Jacobs --- Department of Natural Resources and Environment, Australia M. Ryan --- Department of Natural Resources and Environment, Australia G. Kearney --- Department of Natural Resources and Environment, AustraliaExperiments were conducted at three sites to examine effects of applying different nitrogen (N) fertilisers at 45 kg N ha−1, with and without phosphorus (P), potassium (K) and sulphur (S) on dairy pasture nutritive value and mineral content in autumn... -
Accumulation of hepatic Hsp70 and plasma cortisol in Oreochromis mossambicus following sublethal metal and DDT exposure
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SS Mlambo --- Centre for Aquatic Research, Zoology Department, South Africa JHJ van Vuren --- Centre for Aquatic Research, Zoology Department, South Africa R Basson --- Centre for Aquatic Research, Zoology Department, South Africa B Grant --- Centre for Aquatic Research, Zoology Department, South AfricaHeat shock response in Oreochromis mossambicus livers was measured, using antibodies specific to Hsp70 family members, by an immunoblotting protocol. The hepatic isoforms Hsp70, Hsp74 and Hsp76 were identified and quantified from copper exposures. Long-term DDT exposure did not result... -
Effects of wild and farm-grown macroalgae on the growth of juvenile South African abalone Haliotis midae Linnaeus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DV Robertson-Andersson --- Department of Biodiversity and Conservation Biology, South Africa GW Maneveldt --- Department of Biodiversity and Conservation Biology, South Africa K Naidoo --- Department of Biodiversity and Conservation Biology, South AfricaThe effect of various macroalgal diets on the growth of grow-out (>20 mm shell length) South African abalone Haliotis midae was investigated on a commercial abalone farm. The experiment consisted of four treatments: fresh kelp blades (Ecklonia maxima (Osbeck) Papenfuss)... -
Toxicity of the chlorpyrifos-based pesticide Termifos®: effects on behaviour and biochemical and haematological parameters of African catfish Clarias gariepinus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CD Nwani --- Department of Zoology and Environmental Biology, Nigeria DO Ugwu --- Department of Zoology and Environmental Biology, Nigeria OC Okeke --- Department of Zoology and Environmental Biology, Nigeria GC Onyishi --- Department of Zoology and Environmental Biology, Nigeria FN Ekeh --- Department of Zoology and Environmental Biology, Nigeria C Atama --- Department of Zoology and Environmental Biology, Nigeria LO Eneje --- Department of Applied Microbiology and Brewing, NigeriaThe present study, conducted in 2012, determined the toxicity of the chlorpyrifos-based pesticide Termifos® and its effects on behaviour and biochemical and haematological parameters in juvenile African catfish Clarias gariepinus. The 96 h LC50, estimated by probit analysis in a... -
Effect of Protein Level and Varying Protein – Lipid Concentrations on Growth Characteristics of Juvenile Spotted Grunter Pomadasys Commersonnii (Haemulidae)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T. Hecht A. Irish J. SalesA 60-day feeding trial was conducted to evaluate the effects of dietary crude protein level on growth, feed conversion and protein efficiency ratio of juvenile (3–6 g) spotted grunter Pomadasys commersonnii. In the experiment, six semi-purified diets containing casein and... -
Effect of dietary protein to energy ratio on growth and nitrogenous waste production of cultured dusky kob Argyrosomus japonicus
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LD Woolley --- Department of Ichthyology and Fisheries Science, South Africa CLW Jones --- Department of Ichthyology and Fisheries Science, South Africa PJ Britz --- Department of Ichthyology and Fisheries Science, South AfricaThe effect of dietary protein to energy ratio (P:E) on the growth of dusky kob Argyrosomus japoni-cus was investigated as a first step towards formulating a practical diet for this potential mariculture species in South Africa. The effects of dietary... -
Growth of market-size abalone (Haliotis midae) fed kelp (Ecklonia maxima) versus a low-protein commercial feed
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TL Francis GW Maneveldt J VenterThe growth of grow-out abalone fed on kelp, with c. 10 % dry weight protein content, was compared with that of those fed on 'Feed A' (a new low-protein commercial feed of c. 26 % protein), in a flow-through system... -
Alterations in serum protein fractions and Na+-K+ATPase activity in Clarias gariepinus infested with henneguyosis in Ismailia, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DM Sabri MA Danasoury IAM Eissa HM KhouraibaTotal serum protein, protein fractions and Na+-K+ATPase activity were estimated in Clarias gariepinus collected from surface waters in Ismailia governorate, Egypt. Comparisons were made between fish infested with respiratory henneguyosis and non-infested fish. Results of serum analysis revealed a significant... -
Growth and economic performance of Clarias gariepinus juveniles fed diets containing velvet bean, Mucuna pruriens, seed meal
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AZ Aderolu --- Department of Marine Sciences, VM Akpabio --- Department of Marine Sciences,The partial replacement of fishmeal with mucuna seed meal in the diet of cultured juvenile Clarias gariepinus was tested over 70 days to determine their growth, nutrient and economic performance. The 25% fishmeal component of the control diet was replaced... -
Simultaneous extraction of chitin and astaxanthin from waste of lobsters Jasus lalandii, and use of astaxanthin as an aquacultural feed additive
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Auerswald G GädeThis work investigates simple methods for simultaneous extraction of astaxanthin and chitin from industrial waste of the South African West Coast rock lobster Jasus lalandii. Removal of proteins from waste is the critical step to yield intact chitin and astaxanthin... -
Towards an abalone weaning diet: evaluation of agar-bound fishmeal and spirulina as dietary ingredients
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Ismail CLW Jones PJ Britz AJ EsterhuizenSurvival of post-settlement abalone when 'weaning' them from diatoms onto macroalgae/artificial feed remains unpredictable for farmers. It is hypothesised that spirulina algae, which are high in protein, may be a suitable feed ingredient for weaning abalone. Over a period of... -
Kikuyu over-sown with ryegrass and clover: grazing capacity, milk production and milk composition
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: PR Botha R Meeske HA SnymanThe high dry matter yield of kikuyu (Pennisetum clandestinum) under favourable conditions supports high stocking rates and milk production per hectare. However, the quality of kikuyu is generally low and consequently the milk production per cow is also low. The... -
Induced chemical defences in Colophospermum mopane trees
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: DCJ Wessels C van der Waal WF de BoerA field experiment was conducted in which Mopane (Colophospermum mopane) trees were subjected to three different canopy treatments:felling of trees at a mean height of 0.7m above ground level, felling at a height of 2m, or pruning of selected branches... -
Estimation of true intestinal digestibility of dry matter, nitrogen and amino acids of cowpea and silverleaf desmodium forage legumes and Brachystegia spiciformis (musasa) browse legume
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JJ Baloyi --- Department of Animal Science, Zimbabwe H Hamudikuwanda --- Department of Animal Science, Zimbabwe NT Ngongoni --- Department of Animal Science, ZimbabweTrue intestinal digestibility of dry matter (DM), rumen-undegraded dietary protein (UDP) and amino acids of cowpea, silverleaf desmodium and Brachystegia spiciformis (musasa) were estimated. The true intestinal digestibility was calculated as the difference between the content of a bag that... -
The effect of nitrogen and sulphur on the grain yield and quality of canola (Brassica napus L.) grown in the Western Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Wonder Ngezimana --- Department of Agronomy, South Africa Gert A Agenbag --- Department of Agronomy, South AfricaOn average low grain yields of less than 1.5 t ha-1 are obtained with canola in the Western Cape province of South Africa. Injudicious use of fertiliser has been suggested as a major cause, hence the study was done to... -
Evaluation of four Mozambican cowpea landraces for drought tolerance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Celia M Martins --- Forestry and Agricultural Biotechnology Institute, Plant Science Department, South Africa David W Lawlor --- Rothamsted Research, UK Orlando A Quilambo --- Department of Biological Sciences, Mozambique Karl J Kunert --- Forestry and Agricultural Biotechnology Institute, Plant Science Department, South AfricaThe southern part of Mozambique is vulnerable to drought, affecting the country's food production, and thus requires more drought-tolerant crops. Four local cowpea landraces, Massava nhassenje, Timbawene moteado, Namarua and Tete-2, which are currently widely used by local Mozambican farmers,... -
Familial hypercholesterolemia
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: DJ Blom --- Division of Lipidology, Department of Medicine, South AfricaFamilial hypercholesterolaemia (FH) is a monogenic disorder of low-density lipoprotein (LDL) metabolism. It is characterised by markedly elevated LDL cholesterol, autosomal dominant inheritance, premature cardiovascular disease and tendon xanthomata. FH is a genetically heterogeneous disorder, but the most common underlying... -
Hypertriglyceridaemia: Aetiology, Complications and Management
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: DJ Blom --- Division of Lipidology, Department of Medicine,The bulk of plasma triglycerides are carried by chylomicrons in the fed and very low-density lipoproteins in the fasted state. These triglyceride-rich lipoproteins are metabolised to remnant lipoproteins by lipoprotein lipase (LPL). Hypertriglyceridaemia results if triglyceride-rich lipoproteins accumulate either due... -
Statin therapy for the octogenarian?
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: DJ Blom --- Division of Lipidology, Department of Medicine,Cardiovascular risk increases progressively with age. Statins in octogenarians may therefore potentially bring about large reductions in absolute risk. Epidemiological studies, however, show that statin prescription declines with age and is lowest in the oldest patients with the highest cardiovascular... -
Carotid intima-media thickness and its associations with type 2 diabetes mellitus in South Africans
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: P Rheeder --- Epidemiology and Biostatistics Track, School of Health Systems and Public Health, University of Pretoria, MC Duim-Beytell --- School of Medicine, University of Pretoria, R Meijer --- Julius Centre for Health Sciences and Primary Care, Netherlands T Gustavsson --- Image and Data Analysis, Sweden GKG Danler --- Department of Radiology, RA Ahmed --- Department of Radiology, DG Van Zyl --- Department of Internal Medicine,Objectives: Carotid intima-media thickness (CIMT) is a surrogate marker of subclinical atherosclerosis and a predictor of cardiovascular events. Few studies in Africa have evaluated CIMT and its associations in people with type 2 diabetes mellitus. This study measured CIMT in... -
The channelopathies: an overview
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Joanne M Blanckenberg [AN0001]What at first glance appears to be a random selection of widely differing clinical presentations and syndromes, has recently been found to have as their common underlying factor an inherited abnormality of the mechanism in the cell wall, the ion... -
Familial hypercholesterolemia
Item type: Journal Article • Journal: South African Family Practice • Authors: DJ Blom --- Division of Lipidology, Department of Medicine, South AfricaFamilial hypercholesterolaemia (FH) is a monogenic disorder of low-density lipoprotein (LDL) metabolism. It is characterised by markedly elevated LDL cholesterol, autosomal dominant inheritance, premature cardiovascular disease and tendon xanthomata. FH is a genetically heterogeneous disorder, but the most common underlying... -
Hypertriglyceridaemia: Aetiology, complications and management
Item type: Journal Article • Journal: South African Family Practice • Authors: DJ Blom --- Division of Lipidology, Department of Medicine,The bulk of plasma triglycerides is carried by chylomicrons in the fed and very low density lipoproteins in the fasted state. These triglyceride-rich lipoproteins are metabolised to remnant lipoproteins by lipoprotein lipase. Hypertriglyceridaemia results if triglyceride-rich lipoproteins accumulate either due... -
The basics of prescribing infant formulas
Item type: Journal Article • Journal: South African Family Practice • Authors: CJW Owens --- Nutrition Information Centre, IL Labuschagne --- Nutrition Information Centre, MJ Lombard --- Nutrition Information Centre,All infant formulas must support the normal growth and development of infants, and this needs to be scientifically demonstrated. Formulas have to contain sufficient amounts of basic nutrients, and so are nutritionally interchangeable, with no evidence indicating that one brand... -
The basics of prescribing infant formulas
Item type: Journal Article • Journal: South African Family Practice • Authors: CJW Owens --- Nutrition Information Centre, IL Labuschagne --- Nutrition Information Centre, MJ Lombard --- Nutrition Information Centre,All infant formulas must support the normal growth and development of infants, and this needs to be scientifically demonstrated. Formulas have to contain sufficient amounts of basic nutrients, and so are nutritionally interchangeable, with no evidence indicating that one brand... -
Nutritional condition of fish larvae in South African estuaries: an appraisal of three biochemical methods
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Costalago --- Department of Zoology, South Africa N Strydom --- Department of Zoology, South Africa C Frost --- Department of Biochemistry and Microbiology, South AfricaEstuaries are exposed to a number of threats and many South African estuarine systems are functionally and structurally altered. The extent to which fish are affected by these alterations is not fully understood. The estuarine round herring Gilchristella aestuaria is... -
Bee food: the chemistry and nutritional value of nectar, pollen and mixtures of the two
Item type: Journal Article • Journal: African Zoology • Authors: Susan W. Nicolson --- Department of Zoology and Entomology, South AfricaBees are herbivorous insects, consuming nectar and pollen throughout their life cycles. This paper is a brief review of the chemistry of these two floral resources and the implications for bee nutrition. Nectar is primarily an energy source, but in... -
Is protein content in the diet of Wahlberg’s epauletted fruit bats, Epomophorus wahlbergi, important?
Item type: Journal Article • Journal: African Zoology • Authors: Babalwa R. Mqokeli --- School of Life Sciences, University of KwaZulu-Natal, South Africa Colleen T. Downs --- School of Life Sciences, University of KwaZulu-Natal, South AfricaWahlberg’s epauletted fruit bat, Epomophorus wahlbergi, feeds on a range of fruit, nectar, pollen and flowers. Frugivores may have difficulties in maintaining their protein requirements since fruit are generally high in sugar content but low in protein content. Some studies... -
Forage yield and quality response of annual ryegrass (Lolium multiflorum) to different water and nitrogen levels
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Amanuel B Abraha --- Department of Plant Production and Soil Science, South Africa Wayne F Truter --- Department of Plant Production and Soil Science, South Africa John G Annandale --- Department of Plant Production and Soil Science, South Africa Melake K Fessehazion --- Department of Plant Production and Soil Science, South AfricaWater and nitrogen shortages in annual ryegrass (Lolium multiflorum) production can be improved by using proper irrigation and nitrogen scheduling methods. The aim of this research was to analyse the effect of water and nitrogen application on dry matter production... -
An observational study on factors influencing antibiotic use in chronic obstructive pulmonary disease at Universitas Academic Hospital, Bloemfontein
Item type: Journal Article • Journal: South African Family Practice • Authors: Y Dreyer --- Faculty of Health Sciences, School of Medicine, South Africa A Rossouw --- Faculty of Health Sciences, School of Medicine, South Africa H Schoeman --- Faculty of Health Sciences, School of Medicine, South Africa A Van der Nest --- Faculty of Health Sciences, School of Medicine, South Africa C Van Zyl --- Faculty of Health Sciences, School of Medicine, South Africa M Prins --- Faculty of Health Sciences, Pulmonology Division, Department of Internal Medicine, South Africa SD Maasdorp --- Faculty of Health Sciences, Pulmonology Division, Department of Internal Medicine, South Africa G Joubert --- Faculty of Health Sciences, Department of Biostatistics, South AfricaBackground: Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are often precipitated by excessive airway inflammation caused by viral or bacterial infections. Current guidelines suggest prescribing antibiotics to patients with AECOPD and purulent sputum production, but this may lead to... -
Faecal nitrogen of browser and mixed feeder game species during different seasons
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Beanélri B Janecke --- Animal, Wildlife and Grassland Sciences, South Africa G Nico Smit --- Animal, Wildlife and Grassland Sciences, South AfricaA practical measure of assessing periods of potential nutritional stress of game species is needed in the management of these species in the Acacia karroo Riparian Thicket of the central Free State. The objectives of the study were to determine... -
HPV L1 capsid protein detection in high-risk human papillomavirus-positive cervical smears
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: N Heunis --- Department of Anatomical Pathology – Cytology, A Horton --- Consultant Pathologist and Clinical Virologist, Department of Medical Virology, K L Richter --- Consultant Pathologist and Clinical Virologist, Department of Medical Virology, G Dreyer --- Department of Obstetrics and Gynaecology, M Louw --- Department of Anatomical Pathology,Background: The L1 capsid protein is a viral nuclear protein that encapsidates the human papillomavirus (HPV) DNA to build new infectious particles. Previous studies in immune-competent patients have shown that detectable L1 protein in lowgrade squamous intraepithelial lesion (LSIL) smears... -
The long-term effects of fire regime on primary production of montane grasslands in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Colin S Everson --- SAEON, South Africa Terry Everson --- School of Life Sciences, South AfricaNatural grasslands deliver essential ecosystem services through plant production, which enhances water supply, nutrient cycling, soil retention and greenhouse gas mitigation. Although the condition of montane grasslands for provision of ecosystem services is maintained by regular annual or biennial burning,... -
Extensive netting in Albasini and Nandoni dams: a potential threat to fish as a sustainable food source in the Vhembe District, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: IEJ Barnhoorn --- Department of Zoology, South Africa JC van Dyk --- Department of Zoology, South Africa GM Wagenaar --- Department of Zoology, South AfricaFish populations in Albasini and Nandoni dams are negatively affected by extensive netting practices. This observation was made by the authors following a number of fish health assessment surveys related to aquatic pollution in the Luvuvhu River catchment. A comparison... -
The metabolic profiles of HIV-infected and non-infected women in Mangaung, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Z. Hattingh --- Department of Nutrition and Dietetics, C. Walsh --- Department of Nutrition and Dietetics, Fj Veldman --- Fibrinogen Unit, Cj Bester --- Department of Biostatistics,Objective: To determine the biochemical nutritional status of HIV-infected women in Mangaung. -
Nutrition education to improve dietary intake and micronutrient nutriture among children in less-resourced areas: a randomised controlled intervention in Kabarole district, western Uganda
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: M Kabahenda --- Department of Food Science and Technology, Rm Mullis --- Department of Foods and Nutrition, USA Jg Erhardt --- Seameo-Tropmed RCCN, C Northrop-Clewes --- Gain, Sy Nickols --- University of Georgia, USAObjective: To determine whether nutrition education targeting the child-feeding practices of low-income rural caregivers will reduce anaemia and improve vitamin A nutriture of the young children in their care. -
Nutritional quality of a ready-to-use food, and its acceptability to healthy and HIV-infected children receiving antiretroviral treatment
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Nl Wiles --- Dietetics and Human Nutrition, Pietermartizburg Zn Mahlangu --- Dietetics and Human Nutrition, Pietermartizburg M. Siwela --- Dietetics and Human Nutrition, Pietermartizburg Fj Veldman --- Dietetics and Human Nutrition, PietermartizburgObjectives: The objectives of this study were to determine the nutritional quality of a ready-to-use food (RUF), and its acceptability to children who were “healthy” and to those who were human-immunodeficiency virus (HIV)-infected and receiving antiretroviral therapy (ART). -
The role of proline and root traits on selection for drought-stress tolerance in soybeans: a review
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Obed J Mwenye --- Department of Plant Sciences, South Africa Leon van Rensburg --- Department of Soil, Crop and Climate Sciences, South Africa Angeline van Biljon --- Department of Plant Sciences, South Africa Rouxléne van der Merwe --- Department of Plant Sciences, South AfricaDrought stress is a major limiting factor in soybean production. It reduces both the yield and its components. This is dependent on the level and occurrence of drought stress with respect to the growth stages of the plants. Breeding for... -
Effect of short-duration overnight cattle kraaling on grass production in a southern African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Pamela Sibanda --- National University of Science and Technology, Zimbabwe Allan Sebata --- National University of Science and Technology, Zimbabwe Edward Mufandaedza --- Africa Centre for Holistic Management, Zimbabwe Mukai Mawanza --- National University of Science and Technology, ZimbabweRanch owners in eastern and southern Africa have embraced a new rangeland management practice of keeping cattle overnight in temporary livestock corrals (hereafter referred to as kraals) within rangelands for short durations (for example, one week) to improve grass production... -
Optical chlorophyll measurements as predictors of total nitrogen, nitrogen fractions and in vitro ruminal nitrogen degradability in tropical grass forages
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Martin Hughes --- Department of Food Production, Trinidad and Tobago Victor Mlambo --- Department of Animal Science, South Africa Cicero HO Lallo --- Department of Food Production, Trinidad and Tobago Paul GA Jennings --- MARJEN Consulting Group, JamaicaThis study evaluated whether the FieldScout CM 1000 NDVI and Yara N–Tester models can produce accurate and reliable estimates of nitrogen (N), buffer-soluble nitrogen (BSN), buffer-insoluble nitrogen (BISN), non-protein nitrogen (NPN) and in vitro ruminal nitrogen degradability after 3, 12... -
Nutrient intake, digestibility and rumen fermentation characteristics of sheep fed on selected forage sweet potato cultivars
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: R. Irungu --- Kenya Agricultural and Livestock Research Organization, Kenya P.K. Migwi --- Egerton University, Kenya J.N. Kariuki --- Kenya Agricultural and Livestock Research Organization, Kenya A.Y. Guliye --- Egerton University, Njoro, KenyaSelected forage sweet potato cultivars (Ipomoea batatas Lam) have superior forage characteristics, have high rates of regeneration after harvest, are able to smother weeds and can tolerate diseases and moisture stress. However, little information is documented on their feeding value... -
The quantity and quality of feed available to indigenous chickens under the scavenging system in semi-arid Eastern Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: S. M. Nzioka --- Kenya Agricultural and Livestock Research Organization, Kenya E. O. Mungube --- Kenya Agricultural and Livestock Research Organization, Kenya M. D. Mwangi --- Kenya Agricultural and Livestock Research Organization, Kenya L. Muhammed --- Kenya Agricultural and Livestock Research Organization, Kenya J. M. Wambua --- Kenya Agricultural and Livestock Research Organization, KenyaFree range indigenous chickens suffer from low productivity due to inadequate quantity and quality of feed, high predation and high mortality rates. The aim of the study was to establish the nutritional gaps in the free range chickens’ diets. A... -
Maturity, protein content and yield stability of cowpea in Uganda
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Gabriel Ddamulira --- National Crops Resources Research Institute, Uganda Carlos AF Santos --- Embrapa Semi-Arid, Brazil Mildred Alanyo --- National Crops Resources Research Institute, Uganda Idd Ramathani --- National Crops Resources Research Institute, Uganda Mcebisi Maphosa --- Department of Crop and Soil Sciences, ZimbabweLow yields and protein content are major constraints to cowpea production in semi-arid areas. A study was conducted to determine cowpea performance across diverse environments in Uganda. Twenty-eight cowpea genotypes were evaluated in a randomised complete block design with three... -
Impact of seasonal nitrogen fertilisation on production characteristics of a mixed grass pasture in the Western Cape province of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Carien Bester --- Department of Agronomy, South Africa Johan Labuschagne --- Research and Technology Development Services, Department of Agriculture Western Cape, South Africa Petrus J Pieterse --- Department of Agronomy, South AfricaPasture production in the Western Cape has traditionally been based on temperate species producing the majority of fodder during spring and autumn after which dry matter production decreases in winter. To investigate seasonal fertiliser nitrogen (N) management strategies to optimise... -
The effect of low-level kelp supplementation on digestive enzyme activity levels in cultured abalone Haliotis midae fed formulated feeds
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Nel --- Department of Ichthyology and Fisheries Science, South Africa BI Pletschke --- Department of Biochemistry and Microbiology, South Africa PJ Britz --- Department of Ichthyology and Fisheries Science, South AfricaPrevious studies have found that macroalgal inclusion in formulated diets for cultured abalone improves feed utilisation, and it was suggested that seaweed-associated bacteria supply enzymes that aid in the animal's digestion. In the present study, we hypothesised that kelp supplementation... -
Amaranth grain production as affected by watering regimes and day length in southern Mozambique
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jerónimo EMM Ribeiro --- Department of Agronomy, South Africa Petrus J Pieterse --- Department of Agronomy, South Africa Sebastião I Famba --- Faculty of Agronomy and Forestry Engineering, MozambiqueThe high nutritional value of amaranth grain makes it attractive for the diet of rural people living in dry semi-arid areas of southern Mozambique. A study was implemented with Amaranthus hybridus and A. tricolor in sandy soil aiming to assess... -
Effect of soil- and foliar-applied nitrogen fertiliser on growth, yield and protein content of spring wheat (Triticum aestivum L.) under glasshouse conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mongezi M Mbangcolo --- Dohne Agricultural Development Institute, South Africa Petrus J Pieterse --- AgriSciences, Department of Agronomy, South AfricaFoliar application of nitrogen (N) can be essential in improving yield and grain protein content of wheat. Limestone ammonium nitrate and calcium nitrate solution were used as two N top-dressing treatments applied at three growth stages to evaluate their effect... -
Obesity and HIV: a compounding problem
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Chara Biggs --- Discipline of Dietetics and Human Nutrition, South Africa Elizabeth Spooner --- Department of Paediatrics and Child Health, South AfricaObjectives: A cross-sectional study was undertaken at Lancers Road Clinic, Durban, South Africa to determine body composition, haemoglobin, serum albumin and serum high sensitivity C-reactive protein (hs-CRP) levels in asymptomatic ART-naive HIV positive adults. -
Maize grain soluble sugar and protein contents in response to simulated hail damage
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Silindile P Miya --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Albert T Modi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Samson Z Tesfay --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Tafadzwanashe Mabhaudhi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South AfricaProduction of grain of high nutritional quality is essential in maize (Zea mays L.) as a food grain crop. Grain quality may be influenced by environmental and management factors, such as hail, plant density and grain selection. A study was... -
The impacts of season and livestock management strategy on the quality of diets selected by goats and sheep in the semi-arid rangelands of Namaqualand, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Francuois L Müller --- Agricultural Research Council–Animal Production, South Africa M Igshaan Samuels --- Department of Biodiversity and Conservation Biology, South Africa Clement F Cupido --- Agricultural Research Council–Animal Production, South Africa Melvin BV Swarts --- Agricultural Research Council–Animal Production, South Africa Nefza M Amary --- Department of Biodiversity and Conservation Biology, South Africa Dawood Hattas --- Department of Biological Sciences, South Africa Craig Morris --- Agricultural Research Council–Animal Production, South Africa Lilburne F Cyster --- Department of Biodiversity and Conservation Biology, South Africa J Stephen Boatwright --- Department of Biodiversity and Conservation Biology, South AfricaAccess to good-quality forages is one of the major limitations to livestock production in semi-arid pastoral systems. This study aimed to determine whether there are differences in the nutritional quality of diets selected by herded and free-ranging goat and sheep... -
The value of rested sourveld in a communal grazing area in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lynton J Dedekind --- , South Africa Jon McCosh --- , South Africa Terry M Everson --- , South Africa Craig D Morris --- , South Africa Dayle Trotter --- , South AfricaThe potential for forage accumulated during periodic long rests to provide valuable winter grazing for livestock in heavily stocked communal rangelands in sourveld was assessed. In a continuously-grazed commonage at Ntshiqo in the Eastern Cape, South Africa, we measured seasonal... -
An unusual case of hypercholesterolaemia with liver dysfunction
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Zareena Angamia --- , South Africa Frederick J Raal --- , South AfricaAlthough rare, the presentation of the genetic disease spectrum associated with lysosomal acid lipase (LAL) deficiency, a disorder named cholesteryl ester storage disease (CESD) or the more severe form of Wolman's disease, is an important condition to recognise. LAL plays... -
Effect of nitrogen fertilisation during the cool season on daily growth rate, botanical composition and selected nutritive characteristics of a mixed grass-clover pasture in the Winelands sub-region of the Western Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johan Labuschagne --- , South Africa Carien Bester --- , South Africa Petrus J Pieterse --- , South AfricaNitrogen effects the productivity, botanical composition and quality of grass-clover pastures. Responses to N fertilisation are area and season specific and must be quantified to ensure optimal economical pasture production. A grass-clover pasture mixture was established under irrigation at Elsenburg... -
Impact of long-term production management practices on wheat grain yield and quality components under a semi-arid climate
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MK Seepamore --- , South Africa CC du Preez --- , South Africa GM Ceronio --- , South AfricaWheat production in South Africa has declined significantly over the past three decades making the country a nett importer of wheat. Proper production management practices are needed to counter this trend. The aim of the study was therefore to determine... -
Potential impact of marine heatwaves on selected phytoplankton adapted to the Gulf of Guinea during stable hydrographic periods
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Acheampong --- , Ghana P Mantey --- , Ghana A Weremfo --- , GhanaReports suggest that the Gulf of Guinea (northeastern tropical Atlantic) frequently experiences marine heatwaves (MHW)—prolonged periods of anomalously warm seawater—of ≥1.5 °C above baseline. We assessed the likely impact of this anomaly on two microalgae, Thalassiosira weissflogii (diatom) and Gymnodinium... -
Mobilisation and dynamics of energy reserves in different tissues of Donax trunculus (Bivalvia: Donacidae) in the Gulf of Tunis (eastern Mediterranean Sea, Tunisia)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Boussoufa --- , Tunisia H Chalouati --- , Tunisia N Ghazali --- , Tunisia JC Navarro --- , Spain M El Cafsi --- , TunisiaSeasonal changes in condition index and the biochemical components (proteins, lipids and glycogen) of the gonad/digestive gland, foot, labial palp, mantle, gills and adductor muscles of Donax trunculus Linnaeus, 1758 from the Gulf of Tunis were monitored seasonally, from November... -
Food and beverages promoting elderly health: six food-based dietary guidelines to plan good mixed meals for elderly South Africans
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Sanjoy Saha --- , USA Upasana Mukherjee --- , USA Makenzie Miller --- , USA Li-Ling Peng --- , USA Carin Napier --- , South Africa Heleen Grobbelaar --- , South Africa Wilna Oldewage-Theron --- , USAStudies have shown that the elderly are at a higher risk of developing malnutrition due to physiological and pathological changes. Several studies have confirmed that older South Africans have insufficient dietary diversity, resulting in nutritional deficiencies. Furthermore, poor and uninformed... -
Nutritional quality of Calobota sericea fodders. A preliminary assessment
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Francuois L Müller --- , South Africa Clement F Cupido --- , South Africa M Igshaan Samuels --- , South AfricaThis study aimed to provide preliminary information regarding the nutritional quality of Calobota sericea, a preferred perennial legume forage species from the water-limited rangelands of South Africa. Calobota sericea plant samples were collected from the Namaqualand rangelands in the wet... -
Hypertension and diabetes mellitus: a collision of two heavyweight non-communicable diseases
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Pillay --- , South AfricaIntroduction: Patients living with type 2 diabetes mellitus (PLWD) are at an increased risk of developing hypertension (HPT). The presence of HPT in PLWD (PLWDH) accelerates diabetes-related complications (DRC). Scarce data exist from South Africa on the impact of HPT... -
Patients in public hospitals received insufficient food to meet daily protein and energy requirements: Cape Town Metropole, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Marieke Theron --- University of Cape Town, South Africa Siobhan O’Halloran --- Institute of Basic Medical Sciences, University of Oslo, Norway -
Response of wheat cultivars with varying acid tolerances to liming of eastern Free State soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: HJJ van Zyl --- University of the Free State, South Africa CC du Preez --- University of the Free State, South AfricaThe sustainable production of wheat can be affected by soil acidity in the eastern Free State, South Africa. Liming of soil to appropriate acidity levels is therefore regarded as an essential farming practice. In some instances, however, planting of acid-tolerant... -
Nutritional support practices at an intensive care unit in Johannesburg, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Abdullah E Laher --- University of the Witwatersrand, South Africa Jared McDowall --- University of the Witwatersrand, South Africa Mikayla van Welie --- University of the Witwatersrand, South Africa Domenic M Malinga --- University of the Witwatersrand, South Africa Alistair J Craythorne --- University of the Witwatersrand, South Africa Brandon J van Aardt --- University of the Witwatersrand, South Africa Tasneem Dalvie --- University of the Witwatersrand, South Africa Guy A Richards --- University of the Witwatersrand, South Africa -
Does the presence of tall or dwarf elephant grass genotypes change the nutritive value of butterfly pea in grass–legume intercrops?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Tafnes Bernardo Sales-Silva --- Federal Rural University of Pernambuco, Brazil Mércia Virginia Ferreira dos Santos --- Federal Rural University of Pernambuco, Brazil Osniel Faria de Oliveira --- Federal Rural University of Pernambuco, Brazil Pedro Henrique Ferreira da Silva --- Federal Rural University of Pernambuco, Brazil Alexandre Carneiro Leão de Mello --- Federal Rural University of Pernambuco, Brazil Evaristo Jorge Oliveira de Souza --- Federal Rural University of Pernambuco, Brazil Márcio Vieira da Cunha --- Federal Rural University of Pernambuco, BrazilAdding tropical legumes into grass-based forage systems may increase the nutritive fodder value, but competition may decrease legume quality. We evaluated the nutritional values and agronomic responses of tall and dwarf elephant grass genotypes (Cenchrus purpureus (Schumach.) Morrone.) and butterfly... -
Grazing effects on forage quality parameters of three rangeland species in arid regions of Semnan, Iran
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Milad Kamiziani --- University of Kurdistan, Iran Shima Nikoo --- Semnan University, Iran Hamed Joneidi Jafari --- University of Kurdistan, Iran Fateme Naghizade Asl --- Gorgan University of Agricultural Sciences and Natural Resources, IranForage quality determines livestock production and overgrazing results in significant changes in forage quality of rangeland species. This study aimed to compare the effects of overgrazing on forage quality of Artemisia sieberi, Zygophyllum eurypterum and Stipa barbata as dominant species... -
Intercropping techniques improve pasture quality and beef cattle performance compared to livestock systems
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Pedro Mielli Bonacim --- Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Brazil Claudia Cristina Paro de Paz --- Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Brazil Gabriela Geraldi Mendonça --- São Paulo University, College of Veterinary Medicine and Animal Science, Brazil Mara Regina Moitinho --- São Paulo State University (FCAV–UNESP), Brazil Jeferson Garcia Augusto --- Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Brazil Leonardo Sartori Menegatto --- Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Brazil Taise Robinson Kunrath --- Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Brazil Márcia Saladini Vieira Salles --- Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Brazil Flávia Fernanda Simili --- Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria de Agricultura e Abastecimento do Estado de São Paulo, BrazilIn integrated crop-livestock systems (ICLS), pasture is intercropped with crops to provide grain for feed and forage mass for grazing. Although scientific results have shown the benefits of using ICLS instead of conventional livestock systems, few studies have investigated the... -
Chemical composition and in-vitro dry matter degradability of Eragrostis curvula grass hay supplemented with Raphanus sativus
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lwando Mbambalala --- School of Agricultural, Earth and Environmental Science, University of KwaZulu-Natal, South Africa Ntuthuko Raphael Mkhize --- School of Agricultural, Earth and Environmental Science, University of KwaZulu-Natal, South Africa Thamsanqa Doctor Empire Mpanza --- Agricultural Research Council-Animal Production: Animal Nutrition Section, South Africa Zikhona Theodora Rani-Kamwendo --- School of Agricultural, Earth and Environmental Science, University of KwaZulu-Natal, South Africa Sphesihle Mkhungo --- Department of Agriculture and Rural Development, South Africa Lucky Sithole --- Department of Agriculture and Rural Development, South Africa Mutshidzi Given Musekwa --- School of Agricultural Sciences, Faculty of Natural and Agricultural Sciences, South Africa Lusanda Ncisana --- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, South Africa Khuliso Ravhuhali --- School of Agricultural Sciences, Faculty of Natural and Agricultural Sciences, South Africa Tlou Julius Tjelele --- University of South Africa, South AfricaIn developing countries, smallholder livestock farmers face significant challenges due to inadequate feed availability and poor-quality forage. This study investigated the potential of fodder radish (Raphanus sativus) as a protein supplement for low-quality grass hay. Specifically, it examined the effects... -
Functional diversification and performance of wheat–canola rotations in the Western Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A Louw --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa S van der Westhuizen --- Stellenbosch University, South Africa J Strauss --- Stellenbosch University, South AfricaCrop rotation serves as a fundamental pillar within conservation agriculture (CA) farming systems, enabling the integration of more diverse crops and livestock. With increasing weather variability, new methods are needed to assess the long-term effects of diversification on the agronomic...