Table 1.

Composition and nutrient levels of the basal diets for sows during lactation (as-fed basis)^a

Ingredient	Percent
Corn	63.50
Soybean meal	23.00
Fish meal	3.00
Wheat bran	5.00
Soybean oil	2.50
L-Lysine HCl (98%)	0.08
Limestone	0.87
Dicalcium phosphate	1.00
Choline chloride (50%)	0.15
Salt	0.40
Vitamin and mineral premixb	0.50
Calculated nutrient levelsc
CP, %d	17.90
ME, MJ /kgd	13.65
Ca, %d	0.78
TP, %d	0.63
AP, %d	0.41
Total Lys, %e	1.02
Total Met + Cys, %d	0.58
Total Leu, %e	1.51

^aThe HMB group diet was formed by supplementing 2.0 g/kg HMB-Ca to the basal diets

^bProvided per kg of diet: copper, 20 mg; iron, 80 mg; zinc, 100 mg; manganese, 25 mg; selenium, 0.15 mg; iodine, 0.14 mg, vitamin A, 4000 IU; vitamin D₃, 800 IU; vitamin E, 441 IU; menadione, 0.5 mg; thiamine, 1.0 mg; riboflavin, 3.75 mg; vitamin B₆, 1.0 mg; vitamin B₁₂, 15 μg; niacin, 10 mg; D-pantothenic acid, 12 mg; folic acid, 1.3 mg; D-biotin, 200 μg for gestation and lactation diet

^cThe nutrient composition of diets were calculated using nutrition value for the ingredients obtained from China Feed Information Database 2013 (24)

^dCalculated values

^eAnalyzed values