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"Experientia docet" - Experience is the best teacher

Genetic relationship between growth traits in Bonsmara heifer and bull calves on different nutritional regimes

  • 1994
  • Issue: 2
  • Volume: 24
H.E. Theron, M.M. Scholtz and C.Z. Roux Page: 67 - 70

A system of feeder–breeder dimorphism (large, fast growing offspring in feedlots obtained from small, low mainten¬ance cows on natural pastures) would be profitable in South Africa. The possibility of a genetic basis for feeder–breeder dimorphism was estimated by calculating genetic…

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Genetic parameter estimates in the South African Jersey breed

  • 1998
  • Issue: 3
  • Volume: 28
J. duToit, J.B. van Wyk and J. van der Westhuizen Page: 146 -

Data obtained from the INTERGIS for Jersey breeders participating in the NationalDairy Cattle Performance and Progeny Testing Scheme were analysed. The registered and grade records commenced in test year 1977 through 1992 (incomplete) and consisting of lactations between 240 and…

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