Table 5.

Effects of phytosterol supplementation on genus level taxonomic compositon of the cecal microbiota in yellow-feather broilers.

Item	Treatment			SEM	Day			SEM	P-value
	Con	Anti	Phyto		21 D	42 D	63 D		Trt	Day	Trt∗Day
Bacteroides	47.90	50.62	56.32	3.995	54.1a	61.72a	39.01b	3.983	0.32	0.001	0.81
Ruminococcaceae	8.08	3.88	3.91	1.590	4.27	4.44	7.17	1.794	0.12	0.32	0.15
Phascolarctobacterium	2.75	3.06	1.52	1.17	1.08	5.42	0.83	1.863	0.57	0.075	0.30
Barnesiella	1.45	3.66	1.53	1.167	0.24a	0.42a	5.97b	1.980	0.34	0.03	0.63
Enterobacteriaceae	1.59	0.70	0.53	0.933	2.78	0.01	0.04	1.612	0.69	0.05	0.91
Lactobacillus	1.50	1.47	3.04	0.949	0.49	1.53	3.98	1.530	0.43	0.05	0.46
Olsenella	0.30	1.56	1.16	0.987	0.16	1.15	1.71	0.805	0.66	0.19	0.35
Enterococcus	1.06	0.14	0.31	0.533	1.18	0.17	0.18	0.095	0.45	0.56	0.43
Faecalibacterium	3.81	3.41	1.94	0.811	5.98a	2.05b	1.11b	1.016	0.25	0.0008	0.15
Lachnospiraceae	2.58	3.27	1.99	0.393	3.57a	2.49a,b	1.77b	0.519	0.075	0.019	0.45
Others	29.05	26.66	29.32	3.754	26.13	20.68	38.22	2.463	0.85	0.005	0.35

^a,bValues (sharing the same SEM) within the same row with no common superscript letters differ (P < 0.05).

Abbreviations: Con, control group with basal diet; Anti, basal diet supplemented with 200 mg/kg oxytetracycline calcium and 250 mg/kg nosiheptide (Anti); Phyto, basal diet supplemented with 25 mg/kg phytosterols; Trt, treatment.