Table 1.

Ingredients and nutritional composition of the diets fed to piglets (10 to 30 kg BW) in Exp. 1 (as-fed basis, %).

Item	Diets1
	CP17	CP20
Ingredients
Corn	66.50	63.70
Soybean	18.80	19.80
Whey powder	4.30	4.30
Fishmeal	4.00	9.00
Soybean oil	2.60	0.80
Lysine	0.62	0.38
Hydroxy methionine	0.19	0.10
L-threonine	0.21	0.09
L-tryptophan	0.04	0.01
Monocalcium phosphate	0.74	0.00
Limestone	0.70	0.52
Sodium chloride	0.30	0.30
Premix vitamins2	1.00	1.00
Total	100.00	100.00
Nutrients and energy3
DE, MJ/kg	14.60	14.62
Crude fat	4.31	4.33
Total calcium	0.59	0.58
Total phosphorus	0.49	0.50
CP	17.09	20.05
Lysine	1.23	1.23
Methionine + Cystine	0.67	0.68
Threonine	0.74	0.73
Tryptophan	0.20	0.20
Lys:CP ratio	7.20	6.13

DE = digestible energy; CP = crude protein.

¹CP20 is the diet containing 20% CP; CP17 is the diet containing 17% CP.

²Premix vitamins supplied per kilogram of diet: 5 mg Cu, 80 mg Fe, 3 mg Mn, 85 mg Zn, 0.1 mg I, 0.3 mg Se, 50 mg nicotinic acid, 5 mg pantothenic acid, 2 mg folic acid, 0.2 mg biotin; 10,800 IU vitamin A, 4,000 IU vitamin D₃, 40 IU vitamin E, 4 mg vitamin K₃, 6 mg vitamin B₁, 12 mg vitamin B₂, and 0.05 mg vitamin B₁₂.

³Values are calculated.