Table 6.

Effect of nutrient level (NL) and β-mannanase supplementation on apparent total tract digestibility of nutrients in growing pigs (%).¹

Item	NL1		NL2		SEM	P-value
	β-mannanase		β-mannanase			NL	BM	NL × β-mannanase
	0	0.05%	0	0.05%
Phase 1 (d 21)
DM	81.4	82.6	82.1	83.1	0.55	0.29	0.087	0.971
GE	77.0	78.0	77.2	78.6	0.54	0.492	0.036	0.744
CP	81.0	81.7	81.3	82.2	0.70	0.551	0.322	0.889
Phase 2 (d 42)
DM	80.0	81.3	80.2	81.3	0.85	0.917	0.179	0.807
GE	79.3	80.5	79.3	81.2	0.69	0.533	0.033	0.609
CP	80.1	80.7	80.3	81.3	1.00	0.689	0.422	0.822

SEM = standard error of means; DM = dry matter; GE = gross energy; CP = crude protein.

¹NL1, 3,260 kcal ME, 16.51% and 15.63% protein in phases 1 and 2, respectively; NL2, 3,300 kcal ME, 17% and 16% protein in phases 1 and 2, respectively.