Abstract
The work will be developed in Embrapa Southeast Livestock, São Carlos, SP, and Laboratory of Animal Products, belonging FCAV/Unesp, Campus de Jaboticabal, SP. Will be used 108 cattle (steers and heifers) of nine genetic groups from the mating of cows : Nelore, ½ Angus + ½ Nelore e ½ Senepol + ½ Nelore with bulls of breeds Canchim, Bonsmara e Brangus. The animals will be finished in confin…