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. 2021 Jul 29;8:694936. doi: 10.3389/fnut.2021.694936

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Copyright © 2021 Zhang, Liu, Zhang, Yang, Wang and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Microbiota diversity indices of the different groups: (A) the bacterial richness of microbiota communities estimated by the Chao1 value. (B) The bacterial diversity of the microbiota communities estimated by the Shannon index; (C) Venn diagrams that illustrated the observed overlap of OTUs; (D) PCoA plot of unweighted UniFrac distance values and (E) weighted UniFrac distance values. All groups of α diversity indices (Chao1 and Shannon) were analyzed by one-way analysis of variance (ANOVA) followed by Fisher's LSD post hoc tests. Bars with the same letter indicate a non-significant difference (P > 0.05). Five samples per group were randomly selected for microbiota analysis.