Table 1.

Composition of basal diet, as-fed basis¹⁾

Item	Phase 2	Phase 3	Phase 4
Ingredient (%)
Corn	65	68	60
Soybean meal	25	24	16
Fish meal	2	0	0
Wheat bran	4	4	4
Wheat grain	0	0	16
L-lys·HCl	0.15	0.15	0.15
Calcium hydrogen phosphate	0.5	0.5	0.55
Limestone	0.9	0.9	0.85
Salt	0.35	0.35	0.35
Minerals and vitamins2)	2.1	2.1	2.1
Calculated composition
ME (MJ/kg)	13.47	13.49	13.49
CP (%)	18.7	17.3	15.3
Lys (%)	1.07	0.95	0.76
Ca (%)	0.61	0.53	0.52
P (%)	0.60	0.53	0.52

ME, metabolizable energy; CP, crude protein.

¹⁾During Phase 1 (d 23 to 37), piglets were fed the standard postweaning diet (ME, 15.49 MJ/kg; CP, 21.7%; Lys, 1.68%; Ca, 1.06%; P, 0.84%) provided by Anyou Group (Jiangsu, China). Phase 2, 3, and 4 diets were formulated and fed from 38 to 73, 74 to 120, and 121 to 200 d of age, respectively.

²⁾Premix supplied (per kilogram of diet): 8,800 IU vitamin A; 1,600 IU vitamin D; 40 mg vitamin E; 0.4 mg vitamin B₁; 3.6 mg vitamin B₂; 1 mg vitamin B₆; 16 mg niacin; 11 mg pantothenic acid; 180 mg choline chloride; 96 mg Cu as CuSO₄; 88 mg Fe as FeSO₄; 76 mg Zn as ZnSO₄; 24 mg Mn as MnSO₄; 0.4 mg Co as CoCl₂; 0.4 mg I as CaIO₃.