Table 4. OTU richness, coverage and diversity richness index of the 16S rRNA gene obtained from metagenomic sequencing.

Sample ID	No. of raw sequences	No. of high quality sequences	No. of OTUs	Simpson	Chao1	Shannon	Good’s coverage
DM3	18,545	14,978	436	0.13	467.23	3.02	0.99
DH3	9,001	7,310	346	0.05	406.43	3.64	0.98
DM4	21,094	17,153	461	0.29	497.52	2.60	0.99
DH4	18,915	16,272	413	0.10	457.03	3.03	0.99