EFFECT OF EXOGENOUS HORMONES ON THE PRODUCTION OF BEEF FROM HOLSTEIN-FRIESIAN STEERS AND BULLS REARED FROM BIRTH TO 475 KILOGRAMS ON ALL-CONCENTRATE RATION
- 1 December 1968
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Animal Science
- Vol. 48 (3), 269-274
- https://doi.org/10.4141/cjas68-037
Abstract
Thirty-six Holstein-Friesian bull calves reared to 475 kg liveweight grew more rapidly and were more efficient but showed less response to hormone implants than did a comparable group of 36 steers. Bulls had heavier heads and hides, lighter hindquarters, more cooler shrink, and less abdominal and rib fat than did steers. Hormone treatment increased hide weight and rib moisture in steers but decreased these characteristics in bulls. Bulls had heavier livers than steers and hormone treatment increased liver weight in steers.Keywords
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