Table 1. Formula and chemical composition of lactation sow diets (as-fed basis)

ME (kcal/kg)	Low energy	High energy
Ingredients (%)	100.00	100.00
Corn	62.50	60.56
SBM	28.60	28.30
Animal fat	2.63	4.75
Molasses	2.00	2.00
TCP	1.54	1.58
Limestone	1.48	1.55
Salt	0.50	0.50
Choline chloride (50%)	0.05	0.05
L-Lysine·HCl (78%)	0.05	0.05
DL-Methionine (99.8%)	-	0.02
L-Threonine (98.5%)	0.03	0.03
L-Tryptophan (10%)	0.18	0.17
L-Valine (98.5%)	0.09	0.09
Vitamin premix1)	0.15	0.15
Mineral premix2)	0.15	0.15
Phytase	0.05	0.05
Calculated composition (g/100 g DM)
ME (kcal/kg)	3,300	3,400
CP	17.80	17.80
Ca	0.88	0.88
Av. P	0.44	0.44
SID. Arg	1.03	1.03
SID. His	0.41	0.41
SID. Ile	0.62	0.62
SID. Leu	1.36	1.36
SID. Lys	0.88	0.88
SID. Met	0.23	0.23
SID. Met + Cys	0.48	0.48
SID. Thr	0.56	0.56
SID. Trp	0.18	0.18
SID. Val	0.75	0.75

Supplied per kilogram of vitamin premix: 12,000,000 IU vitamin A, 2,400,000 IU vitamin D₃, 132,000 IU vitamin E, 1,500 mg vitamin K₃, 3,000 mg vitamin B₁, 11,250 mg vitamin B₂, 3,000 mg vitamin B₆, 45 mg vitamin B₁₂, 36,000 mg pantothenic acid, 30,000 mg niacin, 600 mg biotin, 4,000 mg folic acid.
Supplied per kilogram of mineral premix: 80,000 mg Fe, 170 mg Co, 8,500 mg Cu, 25,000 mg Mn, 95,000 mg Zn, 140 mg I, 150 mg Se.
ME, metabolizable energy; SBM; soybean meal; TCP, tricalcium phosphate; SID, standardized ileal digestibility.