Table 2.

Alpha diversity (diversity and richness) indexes as calculated by MOTHUR software (ver. 1.30.0).

Samples	Total sequences passed quality check	Total OTUs	Alpha diversity indexes a				Good's coverage
			Ace index	Chao1 index	Simpson index	Shannon index
J 0 h	213,701	725	177.32 ± 78.55	183.07 ± 76.65	0.89 ± 0.03	4.63 ± 0.84	0.999
J 6 h	195,575	731	310.09 ± 56.07	315.60 ± 56.15	0.84 ± 0.08	4.34 ± 0.56	0.998
J 48 h	266,889	657	337.33 ± 11.43	349.08 ± 20.11	0.79 ± 0.06	3.73 ± 0.54	0.998
J 96 h	116,261	983	274.15 ± 74.85	267.67 ± 80.42	0.94 ± 0.02	5.48 ± 0.66	0.997

Operational taxonomic units (OTUs) are defined at 97% sequence similarity.

^aValues represent the average ± SD (each mean value of three determinations).