Diets adjusted for different nutritionals exigencies systems for lambs: carcass characteristics and commercial cuts

Abstract

It was evaluated diets influence in lambs commercial cut dressing Santa Inês race lambs post-lactating, submitted to different nutritionals requirement systems. Twenty one lambs were used, that received water and comfortable feeding, with diets calculated daily to obtain 20% of surplus and supplied at 7 h and 16 h, with daily withdrawal of the surpluses. When the lambs completed 26 kg life weight, they were destined to slaughter. It were analized the body weight at slaughter, carcass weight of hot and cold, with their income yield, loss of weight and pH by freezing immediately after slaughtering and 24 hours later. Since carcass attainment, the left half was split up and divided in five anatomic regions: palette, neck, rib, loin and leg. Data were submitted to analisys of variance and Tukey test, 5%. The nutritionals requirements systems evaluated in this research did not influence (P>0,05) the carcass characteristics analyzed and weight commercial cuts.