The experimentwas conducted to evaluate the use of sugar cane at two concentrate levels asa replacement for sorghum silage in the diet of crossbred young bulls in feedlot.Thirty-six young crossbred males were maintained in individual stalls in a randomizedcomplete experimental design with three diets: sorghum silage with 1.0% of thelive weight (LW) in concentrate, sugar cane with concentrate (1.0% LW) and sugarcane with concentrate (1.2% LW). The diets were calculated to have approximately12% crude protein. The diets did not cause differences in the dressing percentage,feed conversion and bone, muscle and fat percentage. The daily gains and bio-nutritionalindex were higher for the animals fed with sorghum silage (1.70 kg and 13.12,respectively). The final weight and ingestions of dry matter, crude protein,neutral detergent fiber and total digestible nutrients were higher for the animalsfed sorghum silage. The replacement of sorghum silage with sugar cane reducethe animal performance, even when a higher level of concentrate is suppliedin the diet.