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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%... -
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... -
Predicting animal production on sourveld: A species‐based approach
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.J. O'Reagain --- , Republic of South AfricaA simulation model was developed to predict average daily gain (ADG) in cattle and sheep grazing different species and swards of different species composition on Dohne Sourveld. The model was based upon measured ingestive and digestive characteristics of different grass... -
Sugar preferences and digestion by Cape white-eyes, Zosterops virens, fed artificial fruit diets
Item type: Journal Article • Journal: African Zoology • Authors: A. E. Wellmann --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, South Africa C. T. Downs --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, South AfricaSugar preferences and digestion of sugars in artificial fruit of different sugar types and concentrations were investigated in a South African facultative frugivore, the Cape white-eye (Zosterops virens). We studied sugar preferences, daily food and energy intake, and digestive efficiencies... -
Digestive parameters and energy assimilation of Cape porcupine on economically important crops
Item type: Journal Article • Journal: African Zoology • Authors: Kerushka R Pillay --- School of Life Sciences, University of KwaZulu-Natal, South Africa Amy-Leigh Wilson --- School of Life Sciences, University of KwaZulu-Natal, South Africa Tharmalingam Ramesh --- School of Life Sciences, University of KwaZulu-Natal, South Africa Colleen T Downs --- School of Life Sciences, University of KwaZulu-Natal, South AfricaTo better understand how Cape porcupines are able to successfully occupy many agricultural lands, we studied their digestive parameters and energy assimilation when fed three economically important agricultural crops (potatoes [Solanum tuberosum], sweet potatoes [Ipomoea batatas] and butternut [Juglans cinerea])... -
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... -
Assimilation efficiency and gut passage time in an African elapid snake, Hemachatus haemachatus
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: GrahamJ. Alexander --- University of the Witwatersrand, South Africa ShirleyA. Hanrahan --- University of the Witwatersrand, South Africa Duncan Mitchell --- University of the Witwatersrand, South AfricaWe measured apparent assimilation efficiency (AAE) and gut passage time in the African elapid snake Hemachatus haemachatus under laboratory conditions. AAE was dependent on food type, being 89.8% when snakes were fed frogs and 82.8% when fed mice. Differences in...