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"Experientia docet" - Experience is the best teacher

Education and research in animal and grassland production

  • 1986
  • Issue: 3
  • Volume: 16
N.M. Tainton Page: 134 - 136

In spite of the obvious interdependence of animals and grasslands, both education and research in South Africa have been largely intra- rather than interdisciplinary. There are a number of possible reasons for this. Universities find it difficult to train prospective…

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The use of urea by lactating dairy cows when fed maize silage

  • 1986
  • Issue: 2
  • Volume: 16
T.J. Dugmore, R.M. Bredon & K.P. Walsh Page: 87 - 89

    Maize silage is relatively high in energy but low in protein for the normal lactational requirements of dairy cows. Three trials were conducted to compare the use of urea as opposed to natural protein supplements in balancing the…

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The effect of compensatory growth on body composition in sheep

  • 1986
  • Issue: 4
  • Volume: 16
J.C. Greeff, H.H. Meissner, C.Z. Roux & R.J. Janse van Rensburg Page: 162 - 168

Sixty Merino lambs were randomly allotted to one of six feeding levels. The feeding levels were ad libitum (control) and 0,82; 0,72; 0,65; 0,55 and 0,45 of ad libitum. The feeding levels were calculated from the average weekly feed intake…

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A note on the phenotypic relationship between 18-month mating mass and average lifetime reproductive performance of Merino ewes

  • 1986
  • Issue: 2
  • Volume: 16
S.W.P. Cloete & H.J. Heydenrych Page: 97 - 99

        The relationship between 18-month mating mass and average lifetime conceptions/mating (Ec/Em), lambs born/conception (Lb/Ec), lambs born/mating(Lb/Em), preweaning mortalities/Iamb born (Ld/Lb) and lambs weaned/mating (Lw/Em) was investigated with data from 1222 Merino ewes available for at least…

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Influence of different combinations of urea and low ruminal degradable protein sources on performance of high-producing dairy co

  • 1986
  • Issue: 4
  • Volume: 16
L.J. Erasmus, H.P. de Bruin, J.T. Grové, M.H. Neitz & H.H. Meissner Page: 169 - 176

Three complete diets with crude protein 16% and energy value 9,4 MJ ME/kg DM were formulated using different combinations of high and low-degradable protein sources. Diet A was formulated with only natural protein sources (55% UDP), diet A1 contained 1,6%…

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