THE EFFECTS OF INCREASING DIETARY ROUGHAGE LEVEL AND SLAUGHTER WEIGHT ON THE FEEDLOT PERFORMANCE AND CARCASS CHARACTERISTICS OF BULLS AND STEERS

M. A. PRICE, S. D. M. JONES, G. W. MATHISON, R. T. BERG
1980 Canadian Journal of Animal Science  
1980. The effects of increasing dietary roughage levels and slaughter weight on the feedlot performance and carcass characteristics of bulls and steers. Can. J. Anim. Sci. 60: 345-358. A serial slaughter experiment is described comparing 45 buils and 44 implanted steers. Nine of each "sex' ' were slaughtered at the start of the trial and the remaining 7 1 were fed diets containing three roughage levels (20%,50% and 807o alfalfa-brome hay) to two pen-average slaughter weights (a50 kg or 580 kg).
more » ... (a50 kg or 580 kg). Cattle were about 12 mo old at the start of the trial, and bulls were heavier (290 kg vs. 269 kg) than brute (PB) et de I'ED mais augment6 la digestibilit6 de la cellulose (d6tergent acide). Les taurillons grandissaient plus vite que les bouvillons et ils se sont montr6s de lPresent addresse (S.D.M.J):
doi:10.4141/cjas80-044 fatcat:3ywnomqfc5dhtivg4rhv3kgsoq