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"Experientia docet" - Experience is the best teacher

Environmental-genotype responses in livestock to global warming: A southern African perspective (Invited paper)

  • 2010
  • Issue: 5
  • Volume: 40
M.M. Scholtz, D. Furstenburg, A. Maiwashe, M.L. Makgahlela, H.E. Theron and J. van der Westhuizen Page: 408 - 413

Global warming will change Southern Africa’s environments from grass dominated vegetation to dry woodland and desert with a vegetation of C4 dominated grasses, whereas the grazing capacity is expected to decline by more than 30%. Animals will also be more…

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Telingsnavorsing in Suid-Afrika

  • 1983
  • Issue: 4
  • Volume: 13
A.O. de Lange en S.C. Slippers Page: 277 - 280

Animal breeding research in South Africa. During the 1979/80 financial year R310 million or 0,64 % of the GNP was spent on research. Of this amount 89,28 % was spent on research in the natural sciences and 10,72 % on…

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The effect of selection on genetic parameter estimates

  • 2001
  • Issue: 2
  • Volume: 31
R. van Dyk, F.W.C. Neser and F.H. Kanfer Page: 107 - 114

A simulation study was carried out to investigate the effect of selection on the estimation of genetic parameters for butterfat production in dairy cattle. It was found that selection leads to a substantial overestimation of fixed effects and variance components…

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Index selection of beef cattle for growth and milk production using computer simulation modelling

  • 2001
  • Issue: 2
  • Volume: 31
K. Dzama, J.P. Walter, F. Ruvuna, J.O. Sanders and M. Chimonyo Page: 65 - 75

The Texas A&M University (TAMU) Beef Cattle Production model was expanded to include basic concepts of quantitative genetics. The traits simulated were birth weight, yearling weight, mature weight and milk production. The progeny inherited attributes from both the sire and…

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