Table 1. Composition and nutrient content of experimental diet

	Starter (0~35 d)		Grower (36~57 d)		Final (58~70 d)
	Low	High	Low	High	Low	High
Ingredients (%)
Corn	64.47	59.58	66.12	61.25	68.59	63.73
Soybean meal	30.00	30.00	26.19	27.00	23.65	24.45
Rapeseed meal	1.00	1.00	2.00	2.00	2.00	2.00
Animal fat	1.68	6.18	2.59	6.65	2.83	6.90
Choline chloride (50%)	0.04	0.04	0.04	0.04	0.05	0.05
L-Lysine (75%)	0.06	0.08	0.09	0.08	0.11	0.09
DL-Methionine (100%)	0.22	0.24	0.16	0.17	0.14	0.15
L-Threonine (100%)	1.35	1.70	-	-	-	-
Limestone	1.56	1.55	1.49	1.48	1.38	1.38
MCP	1.58	1.59	0.65	0.66	0.57	0.58
Salt	0.31	0.31	0.31	0.31	0.31	0.31
NaHCO3	0.12	0.12	0.11	0.11	0.12	0.11
Vitamin-Mineral premix1	0.20	0.20	0.20	0.20	0.20	0.20
Phytase	0.05	0.05	0.05	0.05	0.05	0.05
Nutrient content2
AME (kcal)	2,950	3,150	3,000	3,200	3,050	3,250
Crude protein (%)	20.00	20.00	18.00	18.00	17.00	17.00
Lysine (%)	1.07	1.07	1.01	1.01	0.95	0.95
Met + Cys	0.92	0.92	0.75	0.75	0.71	0.71
Calcium (%)	0.91	0.91	0.86	0.86	0.80	0.80
Available P	0.33	0.33	0.33	0.33	0.31	0.31

Provided per kilogram of the complete diet: vitamin A (vitamin A acetate), 12,500 IU; vitamin D₃, 2,500 IU; vitamin E (DL-α-tocopheryl acetate), 20 IU; vitamin K₃, 2 mg; vitamin B₁, 2 mg; vitamin B₂, 5 mg; vitamin B₆, 3 mg; vitamin B₁₂, 18 µg; calcium pantothenate, 8 mg; folic acid, 1 mg; biotin, 50 µg; niacin, 24 mg; Fe (FeSO₄․7H₂O), 40 mg; Cu (CuSO₄․H₂O), 8 mg; Zn (ZnSO₄․H₂O), 60 mg; Mn (MnSO₄․H₂O) 90 mg; Mg (MgO) as 1,500 mg.
Nutrient contents in all diet were calculated.