Table 1.

Composition of experimental diets (as-fed basis)

	Treatment
DDGS, %	0		30
Xylanase, EPU/kg diet	0	1,500	0	1,500
Ingredient, %
Yellow corn, ground	62.10	62.09	37.41	37.40
Corn DDGS	0.00	0.00	30.00	30.00
Soybean meal	33.00	33.00	28.00	28.00
Xylanase1	0.00	0.01	0.00	0.01
l-Lys HCl	0.34	0.34	0.35	0.35
dl-Met	0.12	0.12	0.02	0.02
l-Thr	0.10	0.10	0.02	0.02
Poultry fat	2.00	2.00	2.00	2.00
Salt	0.22	0.22	0.22	0.22
Vitamin premix2	0.03	0.03	0.03	0.03
Trace mineral premix3	0.15	0.15	0.15	0.15
Dicalcium phosphate	1.10	1.10	0.64	0.64
Limestone	0.84	0.84	1.16	1.16
Total	100.00	100.00	100.00	100.00
Calculated content
ME, kcal/kg	3,384	3,384	3,395	3,395
Lys4, %	1.25	1.25	1.25	1.25
Met + Cys4, %	0.70	0.70	0.70	0.70
Trp4, %	0.23	0.23	0.23	0.23
Thr4, %	0.75	0.75	0.75	0.75
Ca, %	0.70	0.70	0.70	0.70
Available P, %	0.34	0.34	0.34	0.34
Analyzed content
DM, %	87.54	87.89	87.35	88.21
NDF, %	10.58	13.04	25.00	23.62
ADF, %	2.78	2.84	7.00	6.60
Xylanase activity, EPU/kg diet	270	1,980	310	2,050

¹Xylanase source was Hostazym X 100 (Huvepharma USA, Peachtree City, GA) at 0.01% replacing corn for treatment diets.

²The vitamin premix provided the following per kilogram of complete diet: 6,613.8 IU of vitamin A; 992.0 IU of vitamin D3; 19.8 IU of vitamin E; 2.64 mg of vitamin K; 0.03 mg of vitamin B12; 4.63 mg of riboflavin; 18.52 mg of pantothenic acid; 24.96 mg of niacin; 0.07 mg of biotin.

³The trace mineral premix provided the following per kilogram of complete diet: 4.0 mg of Mn as manganous oxide; 165 mg of Fe as ferrous sulfate; 165 mg of Zn as zinc sulfate; 16.5 mg of Cu as copper sulfate; 0.30 mg of I as ethylenediamine dihydroiodide; and 0.30 mg of Se as sodium selenite.

⁴Standardized ileal digestibility.