Table 1.
The ingredient and nutrient composition of experimental diets

Items	% of available phosphorus (AP) in the diet
	0.20	0.25	0.30
Ingredient (%)
Corn	55.700	55.550	55.400
Wheat HRW	3.820	3.555	3.290
Wheat bran	10.220	10.505	10.790
Soybean meal (48%)	19.370	19.370	19.370
Monocalcium phosphate (Ca 18%, P 21%)	0.630	0.875	1.120
Limestone (Ca 38.5%)	9.660	9.545	9.430
Iodized salt	0.300	0.300	0.300
DL-Methionine (99%)	0.100	0.100	0.100
Vitamin premix	0.100	0.100	0.100
Mineral premix	0.100	0.100	0.100
Total	100	100	100
Calculated nutrient composition
Metabolizable energy (kcal/kg)	2,750	2,750	2,750
Crude protein (%)	16.00	16.00	16.00
Calcium (%)	4.00	4.00	4.00
Total phosphorus (%)	0.59	0.64	0.70
Available phosphorus (%)	0.20	0.25	0.30
Lysine (%)	0.80	0.80	0.80
Methionine (%)	0.36	0.36	0.36
Cysteine (%)	0.29	0.29	0.29
Arginine (%)	0.99	0.99	0.99

Vitamin supplement provided per kilogram of diet: vitamin A, 10,000 IU; vitamin D₃, 2,500IU; vitamin E, 20 IU; vitamin B₁, 1.5 mg; vitamin B₂, 5.0 mg; vitamin B₆, 0.15 mg; vitamin B₁₂ 15.0 mg; choline, 300 mg; pantothenate, 12 mg; nicotinic acid, 50 mg; biotin, 0.15 mg; folic acid, 1.5 mg.
Mineral supplemented provided per kilogram of diet: Fe, 60 mg, Cu, 10 mg; Zn, 80 mg; Mn, 110 mg; Iodine, 0.48 mg; Se, 0.40 mg.