Ingredients and chemical composition of the diets used.

1 The vitamin and mineral premix provided per kg of diet: 13,000 IU of vitamin A (retinyl acetate), 5,000 IU of cholecalciferol, 80 mg of vitamin E (DL-α-tocopheryl acetate), 4 mg of menadione, 4.2 mg of thiamine, 8 mg of riboflavin, 6 mg of pyridoxin, 20 μg of cobalamin, 75 mg of nicotinic acid, 18 mg of pantothenic acid, 2 mg of folic acid, 240 μg of biotin, 10 mg of vitamin C (ascorbic acid), 500 mg of choline chloride, 0.23 mg of Co, 1.2 mg of I, 0.35 mg of Se, 50 mg of Fe, 140 mg of Mn, 25 mg of Cu, and 115 mg of Zn.2 CalculatedIngredients and chemical composition of the diets used.