This research was carried out to evaluate the intake, total and ruminal digestibilities, microbial efficiency synthesis, nitrogen balance (NB) and ruminal parameters of beef heifers, fed sugarcane treated or not with calcium oxide (CaO – 1.0%) and different concentrate levels (CL), in feedlot. Six animals (170.0 kg BW) were allotted to a 6 × 6 Latin square design in a 2 × 3 factorial arrangement (sugarcane in nature treated or not with 1.0% CaO and three CL 0.0, 0.5 and […]