Articles by Keyword: Livemass Gains

Search results for Livemass Gains

We found 19 results for you
  1. Influence of period of deferment before stocking spring‐burnt sourveld on sheep performance and veld productivity

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Spring‐burnt sourveld was stocked with Merino lambs after three different periods of deferment from the time of start of growth in spring. During three seasons, average seasonal livemass gains on veld which was stocked shortly after the start of growth...
  2. 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...
  3. Die evaluering van vier <em>Eragrostis curvula</em> ekotipes met weidende skape

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The evaluation of four Eragrostis curvula ecotypes with grazing sheep. Four ecotypes of Eragrostis curvula, namely, Cape Province 5, Ermelo, Pearston 204 and Makwassie 150 were evaluated in a grazing trial with sheep, at three stocking rates, during two growing...
  4. 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...
  5. Family selection gains for quality traits among South African sugarcane breeding populations

    Family selection gains for quality traits among South African sugarcane breeding populations

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    In sugarcane breeding, family selection has been shown to produce larger gains than individual plant selection. During family selection, whole families of seedlings are selected or rejected based on data derived from replicated family plots. The objective of this study...
  6. Merino sheep responses to different stocking rates and seasonal variation under rangeland conditions of Lesotho

    Merino sheep responses to different stocking rates and seasonal variation under rangeland conditions of Lesotho

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Merino sheep responses to stocking rates were determined over a one-year period. The experimental design consisted of three stocking rates; light (2.0ha LSU-1), moderate (1.25ha LSU-1) and heavy (0.5ha LSU-1) in a Randomised Complete Block Design with three replicates per...
  7. An analysis of a stocking rate trial at Chobela, southern Mozambique

    An analysis of a stocking rate trial at Chobela, southern Mozambique

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    An analysis is presented of data from a stocking rate trial carried out in 1962–1963 at Chobela Livestock Station in southern Mozambique. The data set had limitations but an attempt was made to draw any conclusions possible for management. Data...
  8. Program for the deterministic modelling of genetic gains of tree breeding and seed and clone production strategies

    Program for the deterministic modelling of genetic gains of tree breeding and seed and clone production strategies

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    A deterministic modelling algorithm was developed for the prediction of genetic gains of six breeding and 11 (seed and clone) production strategies. This algorithm can run iteratively over ranges of parameters which affect the genetic gains. These parameters are the...
  9. Harvesting genetics for productive plantations

    Harvesting genetics for productive plantations

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Tree breeding has had significant impacts on the success of the South Mrica forest industry. Examples are cited for tree growth rate, where for instance, a mean genetic improvement of39% has been measured in F2 E.grandis over unimproved controls over...