Table 4.

Predominant bacterial phyla and genera (% of total sequences) in the feces of dogs supplemented with a yeast fermentation product

		Saccharomyces cerevisiae fermentation product, mg/d					P-value
Phylum	Genus1	0	125	250	500	SEM	Linear	Quadratic	0 vs. yeast
Actinobacteria		1.59	4.79	3.24	2.99	3.87	0.16	0.16	0.03
	Bifidobacterium	1.33	4.54	2.96	2.64	3.92	0.05	0.08	0.01
Bacteroidetes		26.30	23.74	23.91	24.75	5.12	0.60	0.43	0.33
	Bacteroides	15.83	14.45	14.92	15.21	3.53	0.78	0.56	0.52
	Prevotella	0.69	1.57	0.99	0.95	0.98	0.04	0.73	0.06
Firmicutes		25.33	30.93	32.19	32.59	9.31	0.08	0.40	0.06
	Allobaculum	4.49	10.26	9.22	10.93	9.58	0.13	0.69	0.10
	Blautia	1.56	1.63	1.80	1.85	0.60	0.41	0.98	0.54
	Clostridium	5.94	4.98	5.52	5.50	1.80	0.83	0.58	0.54
	Faecalibacterium	1.63	1.23	1.03	1.53	0.72	0.63	0.43	0.38
	Lactobacillus	2.80	3.73	4.08	3.06	3.98	0.67	0.54	0.80
	Phascolarctobacterium	0.60	0.58	0.74	0.68	0.18	0.21	0.70	0.41
Fusobacteria		38.37	31.84	31.86	31.31	7.54	0.03	0.18	0.01
	Fusobacterium	38.32	31.81	31.82	31.28	7.53	0.03	0.18	0.01
Proteobacteria		8.31	8.58	8.71	8.26	2.14	0.91	0.72	0.96
	Anaerobiospirillum	1.55	1.88	1.91	2.25	0.98	0.65	0.33	0.34
	Sutterella	6.40	6.57	6.18	5.91	1.52	0.57	0.76	0.83

¹All genera with relative abundance >0.5% of total sequences are presented.