Table 3.

Effects of dietary EO supplementation on alpha diversity of cecal microbes in 21-day-old yellow-feathered broilers.

Items	CON	EO200	EO400	EO600	SEM	P-value
						Treatment	Linear	Quadratic
Ace	497.16b	497.84b	886.73a	552.60b	42.15	<0.001	0.021	0.004
Chao1	907.82b	850.63b	2,257.35a	1,118.42b	178.22	0.008	0.112	0.067
Shannon	6.34	6.32	6.58	6.23	0.07	0.301	0.920	0.226
Simpson	0.97	0.96	0.96	0.97	0.07	0.878	0.860	0.440

CON, basic diet; EO200, basic diet contain 200 mg/kg essential oils; EO400, basic diet contain 400 mg/kg essential oils; EO600, basic diet contain 600 mg/kg essential oils.

^a,bMean value within a role with no common superscript differ significantly in the treatment (P < 0.05).