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Analysis of swine fecal microbiota at various growth stages

机译：猪粪便微生物在不同生长阶段的分析

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Recent obesity studies in humans and rodents have suggested that host weight gain is significantly associated with energy harvesting efficiency which is regulated by gut microbiota. Antibiotic growth promoters have been banned as feed additives in many countries. In this study, we aimed to provide knowledge of swine fecal microbiota by analyzing bacterial 16S rRNA gene sequences. Our results showed that swine fecal bacterial composition varied at each growth stage. Bacteroidetes decreased as the swine gained weight and unclassified genera significantly increased at later growth stages. Operational taxonomic unit (OTU) distribution analysis showed that the bacterial community difference was most significant between growers and finishers, while analysis of shared OTUs indicated a greater proportion of common species between growers and finishers. The differential abundance test between growers and finishers detected that nearly half of the species were shared OTUs, suggesting that differential abundance of each bacterial species predominantly controls bacterial community differences. Although functions of these bacteria are yet to be identified, understanding differences in fecal microbiota between each growth stage will provide additional insights for further studies related to swine gut microbiota.
机译：最近在人类和啮齿动物中进行的肥胖研究表明，宿主体重的增加与能量收集效率显着相关，能量收集效率受肠道菌群的调节。在许多国家，抗生素生长促进剂已被禁止作为饲料添加剂。在这项研究中，我们旨在通过分析细菌16S rRNA基因序列来提供猪粪微生物群的知识。我们的结果表明，猪粪便细菌的组成在每个生长阶段都不同。随着猪体重的增加，拟杆菌的数量减少，未分类的属在生长期后期显着增加。运营分类单位（OTU）分布分析表明，种植者和育肥者之间的细菌群落差异最为显着，而共享OTU的分析表明，种植者和育肥者之间常见物种的比例更高。种植者和育肥者之间的差异丰度测试检测到，几乎一半的物种是共享的OTU，这表明每种细菌物种的差异丰度主要控制细菌群落差异。尽管这些细菌的功能尚待确定，但了解每个生长期之间粪便微生物群的差异将为与猪肠道微生物群有关的进一步研究提供更多的见识。

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