Table 6.

Effect of xylanase (X) and a carbohydrase enzyme blend (EB) on apparent total tract digestibility of dietary constituents, %^1,2

Item	X3		EB4		SEM	P-value
	-	+	-	+		X	EB	X × EB
DM	83.79	83.59	83.45	83.93	0.28	0.600	0.225	0.966
GE	82.30	82.11	82.04	82.37	0.33	0.700	0.488	0.965
CP	83.66	83.94	83.21	84.39	0.56	0.726	0.151	0.705
aEE5	62.82	61.05	61.78	62.10	0.68	0.073	0.737	0.285
NDF	48.95	46.10	47.11	47.94	0.65	0.004	0.375	0.535
ADF	31.71	27.30	26.57	32.45	1.09	0.008	0.001	0.824
Hemicellulose	55.23	52.77	54.26	53.74	0.53	0.003	0.494	0.273

¹Fecal samples were collected on day 23–25 and stored at −20 °C until analysis; pigs were housed in metabolism crates and had free access to feed and water.

² n = 24 pigs per treatment (main effects).

³Xylanase activity was expected to be 15,000 EPU/g and the inclusion rate of X was 0.01% according to the manufacturer’s recommendation.

⁴One gram EB was expected to contain 7,000 CU of cellulase, 5,000 U of β-glucanase, and 1,000 EPU of xylanase; the inclusion rate of EB was 0.01% according to the manufacturer’s recommendation.

⁵Acid-hydrolyzed ether extract (aEE).