. 2020 Oct 8;11:99. doi: 10.1186/s40104-020-00505-7

Table 6.

Effect of dietary characteristics and xylanase addition on fecal SCFA in growing pigs¹

Item²	Xylanase-free diets					Xylanase supplementation diets					SEM	P-value
Item²	Basal diet	36% OB	27% WB	15% OB	12% WB	Basal diet	36% OB	27% WB	15% OB	12% WB	SEM	Diet	Xylanase	D×X³
Acetate	0.68^e	1.23^cde	2.22^ab	1.24^cde	1.59^cd	1.07^de	1.66^bcd	1.73^bc	1.22^cde	2.50^a	0.123	< 0.001	0.002	< 0.001
Propionate	0.36^e	0.81^cde	1.28^ab	0.74^cde	0.99^bcd	0.62^de	1.15^abc	0.92^bcd	0.76^cde	1.54^a	0.096	< 0.001	0.015	0.002
Isobutyrate	0.04^c	0.08^abc	0.09^abc	0.09^abc	0.08^abc	0.06^bc	0.13^ab	0.14^a	0.07^abc	0.15^a	0.016	< 0.001	0.003	0.074
Butyrate	0.19^b	0.35^b	0.59^ab	0.40^ab	0.45^ab	0.26^b	0.44^ab	0.35^b	0.39^ab	0.67^a	0.065	< 0.001	0.521	0.018
Isovalerate	0.09^c	0.17^abc	0.24^a	0.18^abc	0.11^bc	0.11^bc	0.22^ab	0.23^ab	0.17^abc	0.26^a	0.025	< 0.001	0.009	0.024
Valerate	0.09^b	0.20^ab	0.17^ab	0.23^ab	0.15^ab	0.15^ab	0.28^a	0.14^ab	0.18^ab	0.24^ab	0.037	0.023	0.184	0.221
Total SCFA	1.48^e	2.88^cde	4.65^ab	2.90^cd	3.41^bcd	2.29^de	3.95^bc	3.58^bcd	2.83^cde	5.42^a	0.295	< 0.001	0.012	0.004

^a,b,c,d,eValues with different characters in superscripts were different (P < 0.05) in the same row

¹Treatment means are reported as least squares means and are based on 6 observations per treatment. OB Oat bran; WB Wheat bran; SCFA Short-chain fatty acid; SEM Standard error of the mean

²SCFA concentration (mg/g Feed DM) = SCFA concentration (mg/g feces DM) × feces DM (g)/feed DM (g)

³D×X is the interaction between diet and xylanase supplementation