Table 1.

The formula and chemical composition of experimental diets in gestation and lactation (as-fed basis)¹

Item	Protein level in gestation (%)				Lactation
	11.44	12.93	15.04	17.13
Ingredients (%)
Corn	82.16	77.25	72.33	67.40	67.42
Soybean meal (45% CP)	8.86	13.20	17.52	21.80	24.62
Wheat bran	3.50	3.50	3.50	3.50	2.50
Corn gluten meal	0.00	0.85	1.70	2.55	0.00
Sugar molasses	0.50	0.50	0.50	0.50	1.05
Soybean oil	0.90	1.00	1.10	1.20	1.00
L-lysine HCl	0.40	0.27	0.13	0.00	0.38
DL-methionine	0.07	0.02	0.00	0.00	0.00
Dicalcium phosphate	2.62	2.30	1.96	1.64	1.50
Limestone	0.28	0.42	0.60	0.76	0.78
Vitamin premix2	0.20	0.20	0.20	0.20	0.20
Mineral premix3	0.10	0.10	0.10	0.10	0.10
Salt	0.26	0.24	0.21	0.20	0.30
Choline chloride-50	0.15	0.15	0.15	0.15	0.15
Analyzed chemical composition (%)
CP	11.44	12.93	15.04	17.13
Essential amino acids
Arg	0.58	0.80	0.87	1.06
His	0.26	0.36	0.36	0.42
Ile	0.39	0.53	0.57	0.69
Leu	0.97	1.31	1.42	1.69
Lys	0.67	0.84	0.76	0.82
Met	0.27	0.32	0.25	0.30
Phe	0.46	0.64	0.69	0.83
Thr	0.38	0.54	0.55	0.66
Val	0.55	0.74	0.77	0.91
Non-essential amino acids
Ala	0.58	0.78	0.82	0.96
Asp	0.87	1.25	1.32	1.61
Cys	0.22	0.23	0.25	0.28
Glu	2.01	2.75	2.84	3.42
Gly	0.41	0.57	0.59	0.71
Pro	0.67	0.90	0.91	1.07
Ser	0.48	0.69	0.70	0.83
Tyr	0.34	0.43	0.49	0.60

¹Daily feed provision in gestation was 2.0 kg/d and lactation feed was provided ad libitum.

²Provided per kg of diet: vitamin A, 10,000 IU; vitamin D₃, 1,500 IU; vitamin E, 35 IU; vitamin K, 3 mg; vitamin B₂, 4 mg; vitamin B₆, 3 mg; vitamin B₁₂, 15 μg; pantothenic acid, 10 mg; biotin, 50 μg; niacin, 20 mg; folic acid 500 μg.

³Provided per kg of diet: Fe, 75 mg from FeSO₄; Mn, 20 mg from MnSO₄; Zn, 30 mg from ZnSO₄; Cu, 55 mg from CuSO₄; Se, 100 μg from Na₂SeO₃; Co, 250 mg from CoSO₄; I, 250 μg from Ca(IO₃)₂.