It was evaluatedthe performance and the carcass characteristics of 36 non-castrated male lambs,Santa Inês purebreed and crossbreeds from Dorper × Santa Inêsand Texel × Santa Inês, managed in three different systems (intensive,semi-intensive and extensive), slaughtered at 38.41 ± 1.24 kg. It wasobserved the highest weight gain for lambs reared in intensive system, whichalso showed the greatest carcass yield. The management systems did not influencecarcass measures of animals in intensive system much because of the greaterweight of the carcass. The intensive system provided the best performance, regardlessthe genetic group. The use of Texel and Dorper breeds in crossings with SantaInês increases carcass yield.
