Table 4.

Ingredients and composition of experimental diets in Exp. 2 (%, as-fed basis).

Item	Experimental diets
	Phase 1		Phase 2
	β-mannanase1		β-mannanase1
	0	0.05%	0	0.05%
Ingredients
Corn	53.37	55.67	51.10	53.22
SBM	18.66	17.18	12.85	11.72
Wheat	5.00	5.00	5.00	5.00
DDGS	10.00	10.00	15.00	15.00
Palm kernel meal	7.00	7.00	10.00	10.00
Animal fat	2.89	2.02	3.14	2.10
Celite1	0.10	0.10	0.10	0.10
L-lysine·HCl (78%)	0.37	0.37	0.34	0.34
DL-Met (50%)	0.04	0.04	0.13	0.13
Choline chloride (50%)	0.05	0.05	0.05	0.05
Limestone	1.20	1.20	1.09	1.09
Mono-dicalcium phosphate	0.52	0.52	0.40	0.40
Salt	0.30	0.30	0.30	0.30
Mineral premix2	0.20	0.20	0.20	0.20
Vitamin premix3	0.30	0.30	0.30	0.30
Total	100	100	100	100
Calculated composition
ME, kcal/kg	3,300	3,260	3,300	3,260
CP	17.00	16.51	16.00	15.63
Calcium	0.59	0.59	0.52	0.52
Av. phosphorus	0.23	0.23	0.21	0.21
Lys	0.85	0.82	0.73	0.70
Met + Cys	0.48	0.46	0.44	0.42

SBM = soybean meal; DDGS = distillers dried grains with solubles; ME = metabolizable energy; CP = crude protein.

¹β-mannanase (800,000 U/kg) was added by replacing Celite in the diets.

²Supplied per kilogram of diet: 16,000 IU vitamin A, 3,000 IU vitamin D₃, 40 IU vitamin E, 5.0 mg vitamin K₃, 5.0 mg vitamin B₁, 20 mg vitamin B₂, 4.0 mg vitamin B₆, 0.08 mg vitamin B₁₂, 40 mg pantothenic acid, 75 mg niacin, 0.15 mg biotin, 0.65 mg folic acid.

³Supplied per kilogram of diet: 45 mg Fe, 0.25 mg Co, 50 mg Cu, 15 mg Mn, 25 mg Zn, 0.35 mg I, 0.13 mg Se.