Table 1. Ingredients and chemical composition of basal diet (as-fed basis)

Item	Phase 1	Phase 2
Ingredient (%)	100.00	100.00
Corn	52.88	58.93
Soybean meal	38.8	31.56
Corn gluten meal	2.5	3.6
Animal fat	2.2	2.4
Limestone	0.61	0.57
Mono-di calcium phosphate	1.67	1.56
Salt	0.2	0.2
Vitamin premix1)	0.15	0.15
Mineral premix2)	0.15	0.15
L-Lysine (55%)	0.24	0.20
L-Threonine (78%)	0.24	0.38
DL-Methionine (84%)	0.28	0.22
Choline chloride (42%)	0.08	0.08
Calculated chemical composition
Metabolizable energy (kcal/kg)	3,000	3,100
Crude protein (%)	23.00	21.50
Calcium (%)	0.96	0.87
Available phosphorus (%)	0.48	0.44
SID lysine (%)	1.28	1.15
SID methionine (%)	0.58	0.52

Supplied per kg diet: 12,000 U vitamin A, 5,000 U vitamin D3, 80 mg vitamin E, 3.2 mg vitamin B1, 8.6 mg vitamin B2, 5.4 mg vitamin B6, 0.017 mg vitamin B12, 3.2 mg vitamin K3, 18 mg pantothenic acid, 60 mg niacin, 0.30 mg biotin, 2.2 mg folic acid, 18 mg ethoxyquin.
Supplied per kg diet: 20 mg Fe, 110 mg Zn, 120 mg Mn, 1.25 mg I, 0.3 mg Se. The copper content was depend on the treatments.
SID, standardized ileal digestiblity.