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"Experientia docet" - Experience is the best teacher

Genetic parameter estimates in South Africa Holstein cattle

  • 2004
  • Issue: 6
  • Volume: 34
K.N. Tesfa, J.B. van Wyk and F.W.C. Neser Page: 92 - 94

A total of 79687 (after editing) first lactation records for milk (MY), butterfat (BFY) and protein (PRY) yield, as well as butterfat (BFP) and protein (PRP) percentages were obtained from the South African Holstein Society for animals that were registered…

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The effect of dietary energy and protein (amino acid) concentration on the performance of slaughter ostriches

  • 2004
  • Issue: 6
  • Volume: 34
T.S. Brand, R.M. Gous, A.C.M. Kruger, B.B. Aucamp, C.J. Nel and J.O. Horbanczuk Page: 104 - 106

A study was conducted to determine the effect of dietary energy and protein concentrations in a 3 x 5 factorial experimental design on the performance of growing and finishing ostriches. Energy concentrations amounted to 8.5, 10.5 and 12.5 MJ ME/kg…

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Genotype x ecological region interaction in the Nguni cattle breed

  • 2004
  • Issue: 6
  • Volume: 34
M. van Niekerk, F.W.C. Neser and J.B. van Wyk Page: 116 - 118

Weaning weight (WW) records were used to investigate the presence of a genotype x ecological region interaction as well as the magnitude and significance of such an interaction. Records from herds were allocated to one of three veld types that…

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The effects of restricted suckling and early weaning on cow reproduction and weaner production performance in Gudali cattle

  • 2004
  • Issue: 6
  • Volume: 34
O. Messine, L.M.J. Schwalbach and J.P.C. Greyling Page: 119 - 121

The effects of weaning calves at 180 days (early weaning – EW) or at 240 (control – CW) days following restricted suckling (RS) or unrestricted suckling (US) on the post-partum reproductive performance of cows and calf growth rates were investigated…

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