. 2018 Oct 17;97(1):338–352. doi: 10.1093/jas/sky403

Table 6.

Apparent ileal digestibility of energy, nutrients, and dietary fiber of pigs fed corn- and wheat-based diets, %¹

	GE	DM	Ash	OM	CP	ADL	ADF	NDF	Cellulose	Insoluble hemi–cellulose	IDF²	SDF²	TDF²	NSP²	Insoluble NSP	Non–cellulosic NSP
Corn-based diets
Corn-SBM³	77.41^a	75.86^a	20.32^abc	79.03^a	75.69^b	−158.84^b	−1.32^cd	13.86^cd	8.12^bc	21.77^de	32.03^bc	−113.48^d	25.49^c	27.59^c	34.30^b	32.22^c
Corn-SBM + xylanase A⁴	76.54^a	74.70^a	17.55^bc	78.05^a	75.14^b	−132.63^b	−9.51^d	8.65^d	−3.06^c	18.14^e	27.28^c	−119.15^d	20.71^c	22.23^c	28.95^b	28.32^c
Corn-SBM + xylanase B	77.29^a	75.59^a	20.90^abc	78.82^a	76.20^b	−163.80^b	−6.98^d	9.43^d	1.30^c	17.92^e	31.38^c	−108.34^d	25.13^c	27.07^c	33.47^b	33.16^c
Corn-SBM-DDGS⁵	67.66^bc	64.68^b	19.96^abc	68.45^b	70.66^c	−45.19^a	7.81^abc	22.97^bc	13.27^ab	29.24^cd	27.66^c	−23.80^bc	24.75^c	26.31^c	29.37^b	29.80^c
Corn-SBM-DDGS + xylanase A	67.87^bc	64.86^b	18.30^abc	68.66^b	69.71^c	−31.23^a	13.33^ab	28.15^ab	17.88^ab	34.30^bc	30.95^c	−32.29^c	27.35^bc	28.63^c	32.39^b	31.57^c
Corn-SBM-DDGS + xylanase B	68.36^b	64.57^b	20.39^abc	68.71^b	71.15^c	−15.93^a	14.53^ab	28.53^ab	17.85^ab	34.35^bc	29.40^c	−17.41^bc	26.77^bc	27.78^c	30.54^b	30.58^c
Wheat-based diets
Wheat-SBM	76.34^a	75.30^a	25.88^ab	78.04^a	79.91^a	−25.29^a	7.00^abc	29.95^ab	13.24^ab	41.20^ab	39.59^ab	−20.31^bc	34.62^ab	36.74^b	42.10^a	42.17^b
Wheat-SBM + xylanase A	76.04^a	75.44^a	27.47^a	77.88^a	79.43^a	−27.92^a	2.74^bcd	31.97^ab	8.63^abc	46.21^a	40.68^a	−8.09^ab	36.71^a	38.99^ab	43.33^a	46.04^ab
Wheat-SBM + xylanase B	77.76^a	76.34^a	23.89^ab	79.16^a	81.43^a	−34.47^a	9.72^abc	34.54^a	18.24^ab	46.67^a	45.02^a	7.35^a	41.98^a	44.68^a	48.11^a	50.80^a
Wheat-SBM-wheat middlings	65.93^bc	63.22^b	13.56^c	66.69^b	76.11^b	0.15^a	13.77^ab	34.74^a	17.46^ab	44.15^a	40.48^a	−12.02^abc	36.57^a	38.44^ab	42.74^a	43.35^b
Wheat-SBM-wheat middlings + xylanase A	65.45^c	64.09^b	17.65^bc	67.12^b	76.41^b	2.84^a	16.57^a	37.34^a	20.51^a	46.67^a	40.20^a	−14.15^abc	36.18^a	37.91^ab	42.30^a	41.94^b
Wheat-SBM-wheat middlings + xylanase B	65.47^c	63.17^b	13.76^c	66.86^b	75.74^b	0.36^a	12.35^ab	35.34^a	15.52^ab	45.62^a	40.02^a	−14.61^abc	35.82^a	37.62^ab	42.21^a	42.67^b
SEM	1.32	1.39	3.31	1.32	1.14	19.27	4.47	3.72	4.46	3.53	3.17	9.31	3.29	3.25	3.13	3.28
P−values
Grain source	0.025	0.445	0.662	0.076	<0.001	<0.001	0.005	<0.001	0.010	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
Fiber concentration	<0.001	<0.001	0.005	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	0.458	<0.001	0.777	0.949	0.268	0.167
Grain source × fiber concentration	0.097	0.201	0.005	0.195	0.404	<0.001	0.048	0.004	0.047	0.001	0.846	<0.001	0.216	0.210	0.846	0.312
Xylanase	0.584	0.972	0.974	0.776	0.417	0.733	0.867	0.802	0.709	0.553	0.642	0.134	0.467	0.434	0.607	0.335
Grain source × xylanase	0.984	0.779	0.324	0.882	0.883	0.705	0.995	0.874	0.878	0.747	0.884	0.551	0.806	0.710	0.799	0.682
Fiber concentration × xylanase	0.786	0.565	0.924	0.674	0.697	0.557	0.245	0.550	0.120	0.774	0.426	0.423	0.408	0.327	0.349	0.318
Grain source × fiber concentration × xylanase	0.645	0.909	0.966	0.870	0.571	0.704	0.398	0.346	0.299	0.296	0.429	0.362	0.340	0.299	0.379	0.288

¹Data are means of eight observations per treatment.

²IDF = insoluble dietary fiber; SDF = soluble dietary fiber; TDF = total dietary fiber; NSP = nonstarch polysaccharides.

³SBM = soybean meal.

⁴Xylanases A and B were experimental xylanases supplied by Danisco Animal Nutrition-DuPont Industrial Biosciences (Marlborough, UK).

⁵DDGS = distillers dried grains with solubles.