Table 3. Effects of low protein diets on SCFAs concentration in intestinal contents of finishing pigs¹.

Item	Diets			SEM	P value
	16% CP	13% CP	10% CP
Ileal content
Acetic acid (mg/g)	0.97a	0.63b	0.37c	0.070	<0.01
Propionic acid (mg/g)	0.53	0.56	0.54	0.045	0.50
Isobutyric acid (mg/g)
Butyric acid (mg/g)	0.13	0.11	0.11	0.006	0.09
Isovaleric acid (mg/g)	0.02	0.02	0.02	0.001	0.27
Valeric acid (mg/g)	0.007a	0.005b	0.002c	0.001	<0.01
Colonic content
Acetic acid (mg/g)	1.54a	1.28b	0.82c	0.081	<0.01
Propionic acid (mg/g)	0.78a	0.59b	0.37c	0.044	<0.01
Isobutyric acid (mg/g)	0.07a	0.05b	0.03c	0.005	<0.01
Butyric acid (mg/g)	0.38a	0.33a	0.24b	0.018	<0.01
Isovaleric acid (mg/g)	0.16a	0.15a	0.12b	0.005	<0.01
Valeric acid (mg/g)	0.09	0.10	0.08	0.003	0.16

Note: ¹Values are means, n = 6. SEM: standard error of the mean.

^a,b,cDifferent superscript within a row means significantly different (P < 0.05).