Asociación Latinoamericana de Producción Animal (ALPA)
Abstract
A progeny test for postweaning growth and carcass characteristics was conducted on five purebred Brahman sires. Data presented here are from the progeny of five sires that were tested the first year of a multiyear study that is planned to evaluate approximately 25 sires. There was no effect of sire on initial body weight, but sire effects on average daily gain and final body weight were significant (P<.01). Hot carcass weight (P<.001) and ribeye area (P<.01). Sire affected dressing percentage (P<.001), but there was no effect of sire on USDA yield grade. There were no differences among sires in tenderness scored by sensory panel on steaks aged for 14 days or measured by Warner-Bratzler shear on steaks aged for 7, 14 or 21 days. This progeny test of five Brahman sires revealed genetic differences in postweaning rate of gain and carcass quality grade. Data from additional sires will be required to demonstrate genetic differences in tenderness
