Table 1. Composition of diets fed to lactating sows (%)

Ingredient	Lactation
Corn	52.39
Soybean meal	29.00
Wheat	7.83
Wheat barn	2.00
Tallow	5.00
Lysine (95%)	0.20
Methionine (50%)	0.05
Limestone	0.83
Tricalcium phosphate	1.90
Salt	0.30
Vitamin-mineral mix1)	0.40
Antibiotics	0.10
Total	100.00
Chemical composition
ME (kcal/kg)	3,386.00
Protein	18.60
Lysine	1.19
Methionine	0.31
Calcium	0.90
Phosphorus	0.73

Composition per kg of mix: 2,750,000 IU vitamin A, 220,000 IU vitamin D₃, 1,450 mg riboflavin, 11,000 mg d-pantothenic acid, 11,000 mg niacin, 110,000 mg choline, 11 mg vitamin B₁₂, 1,100 mg menadione, 2.2 g ethoxyquin, 11,000 IU vitamin E; Contained 20% Zn, 10% Fe, 5.5% Mn, 1.1% Cu, 0.15% I.