Articles by Keyword: Immunological Gain

Search results for Immunological Gain

We found 25 results for you
  1. Predictors of survival among HIV-positive children on ART in Swaziland

    Predictors of survival among HIV-positive children on ART in Swaziland

    Item type: Journal Article • Journal: African Journal of AIDS Research
    The objective of the study was to determine predictors of survival among HIV-positive children (<15 years) in Swaziland. A retrospective cohort analysis of medical records for 4 167 children living with HIV who were initiated on antiretroviral therapy (ART) between...
  2. Genetic Improvement of Timber Yield and Wood Quality in <em>Eucalyptus Grandis</em> (Hill) Maiden

    Item type: Journal Article • Journal: South African Forestry Journal
    Results of a partial diallel progeny test of Eucalyptus grandis assessed at ages 5, 36, 60 and 105 months are presented. Large genetic variations among full-sib families were found for all traits studied, e.g. the mean tree volume per family...
  3. A model for predicting long term economic optimum stocking rates for beef cattle grazing dryland pastures

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Previous models relating profit to stocking rate have not taken into account annual variation in rainfall. A model is developed here to allow for this factor. The frequency distribution of annual rainfall is used to demonstrate how the stocking rate...
  4. Potential of medic and lucerne pastures in the rûens area of the Southern Cape

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The potential of dryland lucerne and medic pastures was compared over a range of stocking rates, i.e. three, four, five, six, seven and eight merino ewes per hectare, in the Rûens area of the Southern Cape. It was found that...
  5. Influence of grazing management on the production of an irrigated grass/legume pasture in the Rûens area of the Southern cape

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The production of an irrigated grass/legume pasture was determined using Merino ewes on rotational and continuous grazing systems. The clover content of the pasture declined, while the grass content increased under both systems. The lucerne content of the rotationally‐grazed pastures...
  6. A comparison of grass and grass/legume pastures under irrigation in the Outeniqua area of the southern Cape

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Two grass and five grass/legume pastures were evaluated over a period of two seasons at two seasonally set grazing pressures and under two grazing management systems, involving five and seven paddocks per flock and a seven‐day period of stay. Grazing...
  7. Nitrogen fertilization, stocking rate and rotational grazing effects on steers grazing <em>Pennisetum clandestinum</em>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Kikuyu pastures at the Ukulinga research farm near Pietermaritzburg were fertilized with 150 and 300 kg nitrogen (N) ha−1 in the summer periods of 1985–86 and 1986–87, and were continuously grazed with steers at stocking rates of 5.4, 8.0 and...
  8. Productivity of one‐ and two‐year‐old steers grazing Coastcross II (<em>Cynodon</em> hybrid) at four stocking rates

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Coastcross II pastures were continuously grazed with 1‐ or 2‐year‐old steers at stocking rates between 5.4 and 13.4 animals ha−1 in 1985–86 and 1986–87 at the Ukulinga research farm near Pietermaritzburg. In the first season there was no difference between...
  9. Towards optimum grazing management for sheep production on crownvetch (<em>Coronilla varia</em> L.)

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The performance of wether lambs on crownvetch (Coronilla varia L.) pasture was determined for three seasons under five grazing procedures. These included continuous grazing and rotational grazing with a 7‐day period‐of stay and periods‐of‐absence of 7, 21, 35 or 49...
  10. Evaluation of shrub species for sheep grazing in the Strandveld of the Cape West Coast of South Africa

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The production of three exotic shrub species, Atriplex nummularia (old man saltbush), A. canescens (four‐winged salt‐bush) and Medicago arborea (tree lucerne) and one indigenous evergreen shrub, Chrysanthemoides monilifera subsp. pisifera (west coast bitou), was evaluated in the Strandveld of the...