Carcass characteristics of lambs finished in drylot with diets contend different protein levels

Thirty two tricross lambs were finished (1/2 Texel + ¼ Bergamácia + ¼ Corriedale), 16 males and 16 females, were fed for 71 days, with isoenergetic diets (72% TDN), but with different protein levels (12,16,20 and 24% PB) and kept indoors in individual pens. The carcass were evaluated after slaughter. The average net carcass yield was 54%, while the average commercial carcass yield was 48%. It was verified that protein levels between 12 and 24% did not affect hot and cold carcass weights; commercial carcass yield, indexes of compactness of the carcass, and ham, as well as the body condition, carcass conformation, fat covering, fat consistency, meat color, fat thickness and fat deposition. The animals finished with 12% crude protein in the diet showed the highest carcass yield.

carcass yield; protein; qualitative carcass characteristics; quantitative carcass characteristics; sheep