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

Author: 
S.J. Schoeman
Volume: 
26
Issue: 
1
15
19
Year: 
1 996

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.

Files: 
AttachmentSize
PDF icon schoeman96issue1_1.pdf597.18 KB