Table 1. Composition (g/kg, as-fed basis) of the experimental diets

Items		Starter phase (d 8–24)					Grower phase (d 25–35)
		CON1)	CON-X	L-X	M-X	H-X	CON	CON-X	L-X	M-X	H-X
Ingredient (%)
Corn		61.45	61.45	59.46	57.48	53.50	63.79	63.79	58.01	52.22	40.65
Wheat bran		-	-	2.00	4.00	8.00	-	-	2.00	4.00	8.00
Soybean meal (SBM, 48 %)		31.62	31.62	30.94	30.25	28.88	27.44	27.44	27.62	27.81	28.17
Fish meal		1.30	1.30	1.60	1.90	2.50	1.90	1.90	2.05	2.20	2.50
Vegetable oil		1.20	1.20	1.78	2.35	3.50	2.45	2.45	2.84	3.23	4.00
Corn starch		-	-	-	-	-	-	-	3.25	6.50	13.00
Limestone		1.78	1.78	1.59	1.39	1.00	1.84	1.84	1.67	1.50	1.15
Mono-calcium phosphate		1.50	1.50	1.50	1.50	1.50	1.50	1.50	1.50	1.50	1.50
Salt		0.30	0.30	0.30	0.30	0.30	0.30	0.30	0.30	0.30	0.30
Vitamin-mineral premix2)		0.30	0.30	0.30	0.30	0.30	0.30	0.30	0.30	0.30	0.30
Lys-HCI		0.25	0.25	0.25	0.25	0.25	0.20	0.20	0.19	0.18	0.15
DL-methionine		0.30	0.30	0.29	0.28	0.27	0.28	0.28	0.28	0.28	0.28
Calculated composition
Metabolizable energy (kcal/kg)		3,050	3,050	3,050	3,050	3,050	3,150	3,150	3,150	3,150	3,150
Crude protein (%)		21.50	21.50	21.50	21.50	21.50	20.00	20.00	20.00	20.00	20.00
Non-starch polysaccharides (%)		8.33	8.33	8.70	9.07	9.82	7.89	7.89	8.15	8.40	8.91
Lysine (%)		1.32	1.32	1.32	1.32	1.33	1.20	1.20	1.20	1.20	1.20
Methionine + cystine (%)		0.99	0.99	0.99	0.99	0.99	0.94	0.94	0.94	0.94	0.94
Analyzed composition
Analyzed xylanase unit (U/g)		-	3.01	3.00	3.00	3.01	-	3.00	2.99	3.00	3.00

CON, control diet; CON-X, CON + 3,000 U/kg xylanase; L-X, corn replaced to 2% wheat bran in CON + 3,000 U/kg xylanase; M-X, corn replaced to 4% wheat bran in CON + 3,000 U/kg xylanase; H-X, corn replaced to 8% wheat bran in CON+ 3,000 U/kg xylanase.
Vitamin and mineral mixture provided the following nutrients per kg of diet: vitamin A, 24,000 IU; vitamin D3, 6,000 IU; vitamin E, 30 IU; vitamin K, 4 mg; thiamin, 4 mg; riboflavin, 12 mg; pyridoxine, 4 mg; folacine, 2 mg; biotin, 0.03 mg; vitamin B8 0.06 mg; niacin, 90 mg; pantothenic acid, 30 mg; Fe, 80 mg (as FeSO₄ ･H₂O); Zn, 80 mg (as ZnSO₄ ･ H₂O); Mn, 80 mg (as MnSO₄ ･H₂O); Co, 0.5 mg (as CoSO₄ ･H₂O); Cu, 10 mg (as CuSO₄ ･ H₂O); Se, 0.2 mg (as Na₂SeO₃); I, 0.9 mg (as Ca (IO₃) ･ 2H₂O).