The chemical composition of glycerine used in the diets presented: water, 23.2 g/kg; ash, 47.6 g/kg; glycerol, 812 g/kg; methanol, 3.32 mg/kg and gross energy, 14.2 MJ/kg. In this study, glycerine was used as an energetic ingredient in the diet; therefore, to obtain isoenergetic diets, the increase in glycerine level was counterbalanced, mainly by a decrease in corn grain content (Table 1). All the diets were formulated to be isonitrogenous