Table 1.

Ingredient and chemical composition of weaning piglet diets, as-fed basis

	Dietary vitamin A, mg/kg
Items	2	4	8	16
Ingredient, %
Corn	40.14	40.14	40.14	40.14
Extruded corn1	20	20	20	20
Soybean meal	9	9	9	9
Fish meal	7	7	7	7
Plasma protein powder	5	5	5	5
Whey powder	9	9	9	9
Glucose2	3	3	3	3
Soybean oil	3.8	3.8	3.8	3.8
Stone powder	1.05	1.05	1.05	1.05
Choline chloride	0.1	0.1	0.1	0.1
Antioxidants	0.05	0.05	0.05	0.05
Citric acid	0.5	0.5	0.5	0.5
Salt	0.1	0.1	0.1	0.1
l-Lys HCl	0.45	0.45	0.45	0.45
dl-Met	0.2	0.2	0.2	0.2
l-Thr	0.14	0.14	0.14	0.14
l-Trp	0.02	0.02	0.02	0.02
Mineral premix3	0.15	0.15	0.15	0.15
Vitamin premix4	0.3	0.3	0.3	0.3
Total	100	100	100	100
Calculated composition
CP, %	18.65	18.65	18.65	18.65
ME, kcal/kg	3,407	3,407	3,407	3,407
VA, mg/kg	2.20	4.20	8.20	16.20
Ca, %	0.80	0.80	0.80	0.80
Total P, %	0.56	0.56	0.56	0.56
Available P, %	0.38	0.38	0.38	0.38
l-Lys5, %	1.37	1.37	1.37	1.37
Thr5, %	0.81	0.81	0.81	0.81
Trp5, %	0.22	0.22	0.22	0.22
SAA5,6, %	0.75	0.75	0.75	0.75
DCAD7, mEq/kg DM	2.32	2.32	2.32	2.32

¹Bulk density is 0.3 to 0.5 kg/L, puffing temperature is 100 to 150 °C. The moisture content of the finished product is 8% to 10%, and the degree of gelatinization is above 90%.

²Dextrose monohydrate.

³Mineral premix per kilogram of feed: 150 mg Fe (FeSO₄), 100 mg Zn (ZnSO₄), 30 mg Mn (MnSO₄), 25 mg Cu (CuSO₄), 0.5 mg I (KIO₃), 0.3 mg Co (CoSO₄), and 0.3 mg Se (Na₂SeO₃).

⁴Vitamin premix supplied per kilogram of feed: 220 IU vitamin D₃; 16 IU vitamin E; 0.5 mg vitamin K₃; 17.5 μg vitamin B₁₂; 3.5 mg riboflavin; 30 mg niacin; 10 mg d-pantothenic acid; 0.05 mg biotin; 0.3 mg folic acid; 1.0 mg thiamine; 7 mg pyridoxine; and, 4.0 mg ethoxyquin.

⁵Standardized ileal digestible.

⁶SAA = Met + Cys.

⁷DCAD = dietary cation–anion difference, which was calculated according to the formula: [(%Na/0.023 + %K/0.039)] − [(%Cl/0.0355 + %S/0.016)].