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"Experientia docet" - Experience is the best teacher

Crossbreeding to increase beef production: additive and non-additive effects on weight traits

  • 2013
  • Issue: 2
  • Volume: 43
A. Theunissen, M.M. Scholtz, F.W.C. Neser & M.D. MacNeil Page: 143 - 152

Using breed differences effectively facilitates high productivity and profitability. Thus, the objective of the study was to estimate direct and maternal additive and heterosis effects for growth traits (birth weight, weaning weight, 19-month weight of heifers and cow weight) from…

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Long-term selection experiment with Afrikaner cattle 2. Genetic parameters and genotype x environment interaction for calf growt

  • 2009
  • Issue: 2
  • Volume: 39
L.M. Beffa, J.B. van Wyk and G.J. Erasmus Page: 98 - 105

A selection and line x environment interaction study with grade Afrikaner cattle was established in 1956 at Matopos Research Station, Zimbabwe. Two selection lines of 100 cows each were reared in different management environments. The non-supplemented (NS) line relied on…

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Long-term selection experiment with Afrikaner cattle 3. Selection applied and response in calf growth traits

  • 2009
  • Issue: 2
  • Volume: 39
L.M. Beffa, J.B. van Wyk and G.J. Erasmus Page: 106 - 113

A selection and line x environment interaction study with grade Afrikaner cattle was established in 1956 at Matopos Research Station, Zimbabwe. Two selection lines of 100 cows each were reared in different management environments. The non-supplemented (NS) line relied on…

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