Table 1.

Ingredient and chemical composition of experimental diets¹

Item	HE-1	HE-2	LE-1	LE-2
Diet formulation, % as-fed
Ground corn2	83.76	83.76	83.76	83.76
Sodium caseinate	12.70	12.70	12.70	12.70
Monocalcium phosphate	1.30	1.30	1.30	1.30
Limestone	1.20	1.20	1.20	1.20
Salt	0.40	0.40	0.40	0.40
Vitamin premix3	0.14	0.14	0.14	0.14
Trace mineral premix4	0.10	0.10	0.10	0.10
Chromic oxide	0.40	0.40	0.40	0.40
Nutrients, analyzed, % DM basis
DE	3.67	3.66	3.57	3.58
ADF	1.80	1.43	1.94	2.18
NDF	6.64	6.42	8.13	8.43
Total dietary fiber	7.20	6.98	8.45	8.79
Nutrients, calculated, % as-fed
SID5 Lysine	1.00	1.00	1.00	1.00
SID Methionine	0.44	0.44	0.44	0.44
SID TSAA	0.62	0.62	0.62	0.62
SID Threonine	0.63	0.63	0.63	0.63
SID Tryptophan	0.20	0.20	0.20	0.20
Calcium	0.69	0.69	0.69	0.69
STTD P6	0.41	0.41	0.41	0.41
Total P	0.58	0.58	0.58	0.58

¹Econase XT P was added, at the expense of corn, to 4 of the 8 diets at 100 g/tonne.

²Four different samples of corn were used, 2 with higher and 2 with lower DE according to previous data.

³Provided per kg of diet: vitamin A, 6,614 IU; vitamin D, 827 IU; vitamin E, 26 IU; vitamin K, 2.6 mg; niacin, 29.8 mg; pantothenic acid, 16.5 mg; riboflavin, 5.0 mg; vitamin B12, 0.023 mg.

⁴Provided per kg of diet: Zn, 165 mg as zinc sulfate; Fe, 165 mg as iron sulfate; Mn, 39 mg as manganese sulfate; Cu, 17 mg as copper sulfate; I, 0.3 mg as calcium iodate; and Se, 0.3 mg as sodium selenite.

⁵SID = Standardized ileal digestible.

⁶STTD P = Standardized total tract digestible phosphorus.