Characterization of beef cattle breeds by virtue of their performances in the National Beef Cattle Performance and Progeny Testi

Author: S.J. Schoeman
Year: 1996
Issue: 1
Volume: 26
Page: 15 - 19

Average growth and body weight data, which comprised 745 400 weaning records and 14 990 Phase C growth records of young bulls of 16 breeds were obtained from the National Beef Cattle Performance and Progeny Testing Scheme and used in this re-analysis to characterize breeds for a variety of important traits. Phenotypically, mature breed size (X) was found to be significantly related to birth weight (Y = 2.85 + 0.066A), weaning weight (Y= 25.8 + 0.369X) and growth rate (Y = 320 + 2.28X). Nevertheless, some breeds deviate considerably from their predicted values. Productive efficiency was, however, unrelated to mature breed size and dual-purpose breeds tended to be the most efficient. They were also the breeds showing the highest degree of sexual dimorphism.

Keywords: : Growth, beef cattle, breeds, characterization, productive efficiency
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