Experimental diets, centesimal composition (expressed as-fed basis).

1MD, methionine deficient; DL1, recommended level of methionine supplementation; DL2, excess methionine supplementation.
2Supplied by kilogram of diet: retinyl-acetate, 3.44 mg; cholecalciferol, 50 μg; DL-α-tocopherol, 15 mg; thiamine, 1.63 mg; riboflavin, 4.9 mg; pyridoxine, 3.26 mg; cyanocobalamin, 12 μg; D-pantothenic acid, 9.8 mg; D-biotin, 0.1 mg; menadione, 2.4 mg; folic acid, 0.82 mg; niacinamide, 35 mg; selenium, 0.2 mg; iron, 35 mg; copper, 8 mg; manganese, 60 mg; zinc, 50 mg; I, 1 mg; choline, 650 mg; salinomycin, 60 mg; avilamycin, 5 mg; butyl hydroxy toluene, 80 mg.
3Feed formulations were based on the total amino acids of corn and soybean meal as analyzed by Evonik Degussa (Hanau, Germany). The digestibility coefficient suggested by Rostagno et al. (2011) was used to obtain the digestible amino acids. AME: apparent metabolizable energy. The amino acids, crude protein and dry matter were analyzed by Evonik Degussa (Hanau, Germany).
Experimental diets, centesimal composition (expressed as-fed basis).