Table 1.

Ingredient composition of experimental diets

Item (%, unless noted)	Control	Animal fat1)		Soybean oil1)
		2.0%	4.0%	2.0%	4.0%
Ingredient
Corn grains	65.80	61.65	57.49	61.27	56.73
Animal fat	-	2.00	4.00	-	-
Soybean oil	-	-	-	2.00	4.00
Soybean meal	7.40	14.96	22.53	16.19	24.98
Corn gluten meal	11.76	6.76	1.75	5.90	0.05
Monodicalcium phosphate	1.27	1.25	1.24	1.25	1.23
Limestone	10.71	10.66	10.61	10.65	10.59
Salt	0.29	0.30	0.30	0.31	0.33
L-lysine (H2SO4)	0.69	0.44	0.20	0.40	0.12
DL-methionine	0.13	0.19	0.24	0.19	0.25
L-threonine	0.07	0.06	0.05	0.06	0.04
L-tryptophan	0.47	0.31	0.15	0.31	0.15
Choline chloride (50%)	0.05	0.05	0.05	0.05	0.05
NaHCO3	0.10	0.11	0.13	0.16	0.22
Vitamin premix2)	0.13	0.13	0.13	0.13	0.13
Mineral premix2)	0.13	0.13	0.13	0.13	0.13
Celite	1.00	1.00	1.00	1.00	1.00
Total	100.00	100.00	100.00	100.00	100.00
Energy and nutrient contents3)
AMEn (kcal/kg)	2,800	2,800	2,800	2,800	2,800
Crude protein (%)	16.00	16.00	16.00	16.00	16.00
Crude fat (%)	2.57	4.46	6.36	4.45	6.34
Calcium (%)	4.20	4.20	4.20	4.20	4.20
Available P (%)	0.33	0.33	0.33	0.33	0.33
Lysine (%)	0.85	0.87	0.89	0.87	0.89
Cys+Met (%)	0.73	0.73	0.74	0.74	0.74
Digest. Lys (%)	0.79	0.79	0.79	0.79	0.79
Digest. Cys+Met (%)	0.67	0.67	0.67	0.67	0.67
Linoleic acid (%)	1.20	1.31	1.41	2.15	3.10

AME_n, nitrogen-corrected apparent metabolizable energy.

¹⁾Animal fat and soybean oil were obtained from a commercial feed company.

²⁾Provided per kilogram of the complete diet: vitamin A, 12,500 IU; vitamin D₃, 2,500 IU; vitamin E 20 IU; vitamin K₃, 2 mg; vitamin B₁, 2 mg; vitamin B₂, 5 mg; vitamin B₆, 3 mg; vitamin B₁₂, 18 μg; folic acid, 1 mg; biotin 50 μg; niacin, 24 mg; zinc, 60 mg; manganese 50 mg; iron, 50 mg; copper, 6 mg; cobalt, 250 μg; iodine, 1 mg; selenium, 150 μg.

³⁾Calculated values from NRC [19].