Table 2. Effects of low protein diets on proportion of colonic bacteria of finishing pigs at genus level (%)^1,2.

Classification levels of bacteria			Diet			SEM	P value
Phylum	Family	Genus	16% CP	13% CP	10% CP
Firmicutes	Clostridiaceae_1	Clostridium_sensu_stricto_1	6.86b	19.00a	20.78a	2.40	<0.01
	Lactobacillaceae	Lactobacillus	17.84	4.98	6.12	6.02	0.16
	Lachnospiraceae	Blautia	3.21	4.15	5.26	0.52	0.28
		Roseburia	0.48	1.08	1.22	0.28	0.54
	Erysipelotrichaceae	Turicibacter	0.52b	3.31a	3.06a	0.42	<0.01
	Streptococcaceae	Streptococcus	1.03	2.28	1.65	0.34	0.35
	Ruminococcaceae	Ruminococcus	2.97	0.94	1.02	0.59	0.29
		Oscillibacter	1.89	1.18	1.83	0.22	0.36
		Flavonifractor	1.47	0.88	1.35	0.13	0.13
Bacteroidetes	Prevotellaceae	Prevotella	2.18	0.38	1.64	0.54	0.40
	Rikenellaceae	RC9_gut_group	1.82	0.55	0.46	0.16	0.05
Spirochaetae	Spirochaetaceae	Treponema	10.30	6.23	7.40	1.91	0.70
—	—	unidentified	42.67	50.66	42.02	1.97	0.14

Note: ¹Genera with proportion less than 1% are not listed.

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

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