| Abstract | To evaluate the performance of growing hair sheep fed increasing levels of coffee hulls, we conducted an experiment in Rondônia, RO, in a completely randomized design with four treatments, represented by the inclusion levels of coffee hulls for 0, 10 , 20 and 30% to replace the elephant grass (Pennisetum purpureum Schum.) cv. Cameroon and five replications, represented by animals. The coffee hulls contained 85.2, 11.3, 0.50 and 0.16% DM, CP, Ca and P, respectively. Its inclusion in the diet of sheep resulted in higher weight gains (P? 0.01), 9.1, 18.8, 14.5 and 49.1 g / day / animal, respectively, for the inclusion levels of 0, 10, 20 and 30%, the average consumption of animals fed diets containing the shell was 14.6% lower than the fed exclusively on elephant grass (53.7 x 62.9 g DM / kg LW 0.75). |