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. 2021 Aug 5;8:673316. doi: 10.3389/fnut.2021.673316

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Copyright © 2021 Ma, Mahfuz, Wang and Piao.

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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The Bacterial abundance and α-diversity of the cecum in 42 d-broilers dietary with MOA supplementation were assessed by (A) Ace index, (B) Sobs index, (C) Simpson index, (D) Shannon index, and (E) Chao index of the operational taxonomic units (OTUs) community, respectively. The Shannon and Simpson indices represented the diversity of the intestinal microorganisms, while the Sobs, Ace, and Chao indices reflected the species richness. Ctrl: a basal diet of corn-soybean meal with 0 mg/kg of a mixed organic acid; LMOA: a basal diet with 3,000 mg/kg of mixed organic acids; HMOA: a basal diet with 6,000 mg/kg of mixed organic acids. The values were presented as mean ± standard error by the Kruskal-Wallis H test. n = 6.