Table 2.

Ingredient and nutrient composition of the experimental diets: phase 2 (as-fed basis, %)

Item	1.25	1.50	1.75	2.00	2.25	2.50	2.75
Ingredient, %
Corn	47.62	47.45	47.28	47.12	46.95	46.78	46.61
Soybean meal, 46.5% crude protein	22.50	22.50	22.50	22.50	22.50	22.50	22.50
Oats, steam rolled	10.00	10.00	10.00	10.00	10.00	10.00	10.00
Whey permeate	10.00	10.00	10.00	10.00	10.00	10.00	10.00
Enzyme-treated soybean meal	6.00	6.00	6.00	6.00	6.00	6.00	6.00
Soybean oil	2.00	2.00	2.00	2.00	2.00	2.00	2.00
l-Lysine HCl	0.44	0.44	0.44	0.44	0.44	0.44	0.44
dl-Methionine	0.21	0.21	0.21	0.21	0.21	0.21	0.21
l-Threonine	0.17	0.17	0.17	0.17	0.17	0.17	0.17
l-Tryptophan	0.01	0.01	0.01	0.01	0.01	0.01	0.01
l-Valine	0.01	0.01	0.01	0.01	0.01	0.01	0.01
Sodium chloride	0.61	0.61	0.61	0.61	0.61	0.61	0.61
Limestone	0.19	0.36	0.52	0.69	0.86	1.03	1.20
Monocalcium phosphate	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Phytase2	0.01	0.01	0.01	0.01	0.01	0.01	0.01
Vitamin mineral premix3	0.25	0.25	0.25	0.25	0.25	0.25	0.25
Calculated nutrient levels
Metabolizable energy, kcal/kg	3,468	3,461	3,457	3,450	3,444	3,439	3,433
Available P, %	0.27	0.27	0.27	0.27	0.27	0.27	0.27
STTD P, %	0.31	0.31	0.31	0.31	0.31	0.31	0.31
Standardized ileal digestible Lys, %	1.23	1.23	1.23	1.23	1.23	1.23	1.23
Standardized ileal digestible Met + Cys. %	0.71	0.71	0.71	0.71	0.71	0.71	0.71
Standardized ileal digestible Thr, %	0.77	0.77	0.77	0.77	0.77	0.77	0.77
Standardized ileal digestible Trp, %	0.22	0.22	0.22	0.22	0.22	0.22	0.22

¹Phase 2 diet was fed from day 14 to 28 of the experiment.

²Natuphos E, BASF, Florham Park, NJ.

³Provided a minimum per kg of diet: 2,000 IU of vitamin A; 300 IU of vitamin D3; 14 IU of vitamin E; 0.90 mg of menadione (to provide vitamin K); 2.5 mg of riboflavin; 8 mg of d-pantothenic acid; 0.01 mg of vitamin B₁₂, and 15 mg of niacin, 110 mg of Fe (ferrous sulfate); 200 mg of Zn (zinc sulfate); 50 mg of Mn (manganese sulfate); 200 mg of Cu (copper sulfate and tri-basic copper chloride); 0.3 mg of I (calcium iodate); and 0.3 mg of Se (sodium selenite).