Abstract
The objective of this work was to study the carcass characteristics of Aberdeen Angus castrated steers, finished by 112 days in feedlot, with sugar cane + concentrate, or in cultivated pasture of ryegrass ( Lolium multiflorum ). Confined animals were fed with isonitrogeneous diets (13.2% of crude protein) containing, on dry matter, 72.3% of sugar cane and 27.7% of concentrate. Twelve steers, with initial weight of 320 kg and 20 months of age, were used. No difference (P> .05) was observed for slaughter and hot carcass weight that were, respectively, 396 and 202 for steers fed with cultivated pasture and 394 and 201, in the same order, for steers fed with sugar cane. There wasn’t difference (P> .05) between treatments for carcass hot dressing and commercial cuts percentages, carcass length, conformation, fat thickness and longissimus dorsi area. Has significative correlation in two treatments for carcass weight and cushion thickness, conformation and longissimus dorsi area. Steers finished on cultivated pasture the conformation was correlated with all variables. KEY WORDS : Bos taurus, dressing percentage, forage quality, Lolium multiflorum , sugar cane.
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