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. 2021 Aug 2;7(4):1105–1114. doi: 10.1016/j.aninu.2021.01.009

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© 2021 Chinese Association of Animal Science and Veterinary Medicine. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 1 — Microbial diversity of the chicken cecum. (A) Chao1 and the observed abundance-based coverage estimator (ACE) indexes. (B) Simpson and Shannon indexes. (C) Principal component analysis (PCA) plot of the cecal microbiota in groups B and C. (D) Composition and distribution of the microbiota at the phylum level. (E) The heat map showing the composition of the genus-level microbiota combined with the results from the cluster analysis. B1 to B6 refer to group B, the Clostridium butyricum group; C1 to C6 refer to group C, the control group. ^∗, P < 0.05; NS, no significant difference.