Table 1.

Composition of the basal diets for growing pigs at different periods (air-dry basis, %).

Items	6–15 kg	15–30 kg	30–60 kg	60–90 kg
Ingredients (%)
Corn	57.20	60.00	70.30	72.60
Soybean meal	-	24.00	14.00	11.00
Extruded soybean meal	12.95	-	-	-
Extruded soybean	12.21	-	-	-
Fishmeal	5.30	-	-	-
Wheat bran	-	11.35	11.50	12.50
Whey powder	5.83	-	-	-
Soybean oil a	3.95	2.00	2.00	2.00
Limestone	0.90	0.56	0.71	0.71
Calcium hydrogen phosphate	0.47	1.00	0.50	0.10
NaCl	0.25	0.30	0.30	0.30
Lysine	0.14	0.10	0.00	0.10
Premix b	0.80	0.69	0.69	0.69
Total	100.00	100.00	100.00	100.00
Nutrient levels c
DE (MJ/kg)	14.96	13.75	13.84	13.83
CP (%) b	19.53	18.83	15.95	13.95
Ca (%) b	0.81	0.82	0.72	0.61
TP (%)	0.75	0.67	0.54	0.47
AP (%)	0.42	0.37	0.29	0.22
DLys (%)	1.22	0.85	0.71	0.49
DMet (%)	0.27	0.25	0.21	0.19
DMet+DCys (%)	0.69	0.53	0.43	0.39
DThr (%)	0.78	0.55	0.43	0.37
DTrp (%)	0.23	0.19	0.14	0.12

^a 1.5% CLA as used as a substitute for soybean oil in the basal diet of the CLA group. ^b Provided per kilogram of diet: Cu (CuSO₄·5H₂O) 80 mg, Fe (FeSO₄·7H₂O) 100 mg, Zn (ZnSO₄·7H₂O) 100 mg, Mn (MnSO₄·H₂O) 40 mg, Se (Na₂SeO₃) 0.3 mg, I (KI) 0.3 mg, VA 1 750 IU, VD3 200 IU, VE 11 IU, VK3 0.5 mg, niacin 20 mg, pantothenic acid 9 mg, folic acid 0.3 mg, VB1 1 mg, VB2 3 mg, VB6 1.5 mg, VB12 15 μg, biotin 0.05 mg, choline chloride 1.0 g, phytase 0.1 mg, and anti-oxidant 0.5 mg. ^c Measured value. DE: Digestable energy, CP: Crude protein, TP: Total phosphorus, AP: Available phosphorus, DLys: Digestible Lysine, DMet: Digestible Methionine, DThr: Digestible Threonine, DTrp: Digestible Tryptophan.