Table 1.

Composition of the diets (g/kg) ^a.

	Ingredients	G1	G2	G3
Protein	Casein b	200	-	-
	Soybean protein c	-	200	200
Carbohydrates	Maize starch d	560	435	435
	Soybean carbohydrates c	-	125	125
Fat	Soybean oil d	120	15	15
	Soybean fat c	-	105	105
Fibers	Cellulose	60	42.5	42.5
	Soybean fiber c	-	17.5	17.5
Others	Mineral mix e	40	40	40
	Vitamin mix f	20	20	20
Cysteamine b				0.03

^aDiets were semipurified, isoenergetic (16.9 MJ/kg) and were given in powdered form. And the amount of soybean flour in the diet was 50%;

^bShanghai, China;

^cIngredients originating from the soybean flour containing about 210 g fat, 400 g protein and 250 g carbohydrate/kg;

^dChangchun, China;

^eThe mineral mixture provides the following amounts (mg/kg diet): Ca, 4000; K, 2400; Na, 1600; Mg, 400; Fe, 120; trace elements: Mn, 320; Cu, 5; Zn, 18; Co, 0.04; I, 0.02;

^fThe vitamin mixture provides the following amounts (mg/kg diet): retinol, 12; cholecalciferol, 0.125; thiamin, 40; riboflavin, 30; pantothenic acid, 140; pyridoxine, 20; inositol, 300; cyanocobalamine, 0.1; ascorbic acid, 1600; (dL) α-tocopherol, 340; menadione, 80; nicotinic acid, 200; paraaminobenzoic acid, 100; folic acid, 10; biotin, 0.6; choline, 2720; G1, Group 1, a control diet containing casein; G2, Group 2, a treatment diet containing raw soybean flour; G3, Group 3, raw soybean diet plus 30 mg/kg cysteamine.