. 2021 Jun 16;8:680208. doi: 10.3389/fvets.2021.680208

Table 6.

Effects of dietary XOS supplementation on concentrations of short-chain fatty acids in colonic contents of weaned piglets (n = 6; data are mean value in mg/g).

Items	Blank control group	XOS-supplemented groups (g/t)			Positive control group	Pooled SEM	P-value
		100	250	500
Day 7
Acetic acid	2.26^b	3.46^a	3.85^a	3.65^a	3.96^a	0.30	0.01
Propionic acid	1.79	1.76	1.93	1.54	1.69	0.25	0.89
Butyric acid	1.08	0.90	1.29	0.85	1.16	0.19	0.57
Valeric acid	0.19	0.24	0.17	0.09	0.17	0.04	0.38
Isobutyric acid	0.17	0.22	0.19	0.17	0.17	0.02	0.46
Isovaleric acid	0.25	0.29	0.29	0.25	0.25	0.05	0.95
Short-chain fatty acid	5.74^b	6.87^ab	7.72^a	6.55^ab	7.39^ab	0.57	0.03
Day 21
Acetic acid	3.33	3.43	3.27	3.33	3.66	0.31	0.93
Propionic acid	1.31	1.55	1.31	1.32	1.45	0.16	0.82
Butyric acid	1.13	1.51	1.32	1.10	1.15	0.20	0.65
Valeric acid	0.36	0.42	0.43	0.31	0.34	0.04	0.42
Isobutyric acid	0.36	0.38	0.36	0.29	0.34	0.03	0.61
Isovaleric acid	0.24^b	0.40^a	0.27^b	0.24^b	0.29^b	0.03	0.04
Short-chain fatty acid	6.74	7.69	6.97	6.58	7.23	0.51	0.70
Day 56
Acetic acid	2.30^b	2.94^a	2.82^ab	2.66^ab	2.29^b	0.21	0.04
Propionic acid	1.16	1.42	1.55	1.29	1.25	0.14	0.29
Butyric acid	0.61^b	0.90^ab	1.16^a	0.92^ab	0.72^b	0.10	0.04
Valeric acid	0.14	0.22	0.23	0.20	0.17	0.03	0.24
Isobutyric acid	0.08	0.09	0.11	0.12	0.09	0.02	0.63
Isovaleric acid	0.07	0.08	0.10	0.10	0.08	0.02	0.77
Short-chain fatty acid	4.37^b	5.66^a	5.97^a	5.28^ab	4.59^b	0.43	0.04

Data in the same row with different superscripts differ significantly (P < 0.05). Short-chain fatty acid, including acetic acid, ropionic acid, butyric acid, valeric acid, isobutyric acid, and isovaleric acid.