TABLE 3.

The Alpha diversity index of each groups.

	A	B	C	D
OTU	200 ± 9.08	196 ± 4.2	198.75 ± 5.62	195 ± 6.56
ACE	204.41 ± 7.55	200.16 ± 4.53	203.59 ± 4.88	203.77 ± 7.51
Chao1	206.3 ± 6.74	199.35 ± 4.34	206.23 ± 5.37	204.93 ± 7.58
Simpson	0.16 ± 0.03	0.29 ± 0.04	0.22 ± 0.04	0.31 ± 0.05
Shannon	2.72 ± 0.19b	2.04 ± 0.1a	2.24 ± 0.12ab	1.91 ± 0.1a

^a,bMean values with unlike letters are significantly different (P < 0.05).