Table 2.

Comparison of apparent ileal (AID) and total tract digestibility (ATTD), and hindgut fermentation (HF) in 2 higher energy (HE) and 2 lower energy (LE) corn samples with and without xylanase¹

	Diet				Enzyme			P-value2
Item, %	HE-1	HE-2	LE-1	LE-2	+	-	Pooled SEM	Diet	Enzyme
AID
GE	79.1	80.2	80.2	79.7	80.2	79.4	0.95	0.744	0.311
DM	77.5	78.2	78.9	78.5	78.5	78.0	0.92	0.686	0.522
TDF	22.0	23.6	27.3	23.8	25.8	22.6	1.40	0.100	0.043
HF 3
GE	5.3	5.5	3.0	3.9	4.6	4.2	1.43	0.092	0.737
DM	6.0	6.6	3.9	4.8	5.7	5.0	1.63	0.113	0.678
TDF	10.4	10.3	7.0	6.7	8.8	8.4	1.45	0.059	0.946
ATTD
GE	84.4b	85.7b	83.2a	83.6a	84.8	83.6	0.61	<0.001	0.008
DM	83.5a	84.8b	82.8a	83.3a	84.2	83.0	0.63	0.007	0.011
TDF	32.4	33.9	34.3	30.5	34.6	31.0	1.58	0.400	0.048

¹Econase XT 25P was added at 100 g/tonne.

²No interactions between diet and enzyme were observed, P > 0.10.

³HF = Hindgut fermentation = (total tract digestibility – apparent ileal digestibility).