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"Experientia docet" - Experience is the best teacher

Breeding objectives for Holstein cattle in South Africa

  • 2014
  • Issue: 3
  • Volume: 44
C.B. Banga, F.W.C. Neser & D.J. Garrick Page: 199 - 214

Well-defined breeding objectives form the basis of sound genetic improvement programmes. Breeding objectives for Holstein cattle in South Africa were developed in the current study. Economic values were calculated for those economically relevant traits that had adequate bio-economic data, namely…

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Association of polymorphism of the alpha 1-antitrypsin gene with milk production traits in Chinese Holstein

  • 2010
  • Issue: 2
  • Volume: 40
Qiu-ling Li, Zheng-feng Zhang, Chang-fa Wang, Hai Yang, Hong-mei Wang, Jian-bin Li, Jin-ming Huang and Ji-feng Zhong Page: 113 - 120

Protein degradation in bovine milk affects the quality of dairy products. Alpha 1-antitrypsin (AAT) can protect vulnerable elastic tissues from degradation by neutrophil elastase. The aim of this study was to assess the association of polymorphisms in bovine AAT gene…

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Test-day models for South African dairy cattle for participation in international evaluations

  • 2006
  • Issue: 1
  • Volume: 36
B.E. Mostert, H.E. Theron, F.H.J. Kanfer and E. van Marle-Köster Page: 58 - 70

Variance components and breeding values of production traits and somatic cell score of South African Guernsey, Ayrshire, Holstein and Jersey breeds have been estimated using a multi-lactation repeatability test-day model, including tests of the first three lactations as repeated measures…

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