Table 3.

Effects of dietary AOE on phylum-level relative abundances of the cecal microbiota in ducks (%).

Phylum*	CK	Y1	Y2	Y3	P-value
p_Firmicutes	39.63	43.16	38.68	37.18	0.24
p_Bacteroidetes	27.44	29.30	28.19	33.31	0.51
p_Proteobacteria	18.73	15.87	18.75	16.86	1.00
p_Fusobacteria	5.83	5.77	9.22	7.33	0.26
p_unclassified	3.41	1.62	2.49	1.10	0.24
p_Actinobacteria	2.02	1.14	0.94	1.32	0.30
p_Synergistetes	0.99	0.89	0.65	1.15	0.69
p_Epsilonbacteraeota	0.54	0.78	0.35	0.18	0.40
p_Deferribacteres	0.51	0.64	0.31	0.31	1.00
p_Spirochaetes	0.21	0.06	0.05	0.73	0.62
p_Elusimicrobia	0.16	0.10	0.07	0.21	0.31
p_Verrucomicrobia	0.09	0.32	0.07	0.04	0.91
p_Tenericutes	0.23	0.08	0.08	0.12	0.71
p_Cyanobacteria	0.12	0.15	0.13	0.10	0.64
p_Lentisphaerae	0.04	0.08	0.03	0.04	0.58

^*Top 15 most abundant species are listed. The relative species abundances of gut microbial communities were analyzed using the Kruskal–Wallis test, n = 9.