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膳食纤维与淀粉比例对家兔盲肠古菌形成的影响

Impact of dietary fibre:starch ratio in shaping caecal archaea revealed in rabbits.

作者信息

Zhu Y, Sun Y, Wang C, Li F

机构信息

Department of Animal Science, Shandong Agricultural University, Taian, Shandong, China.

出版信息

J Anim Physiol Anim Nutr (Berl). 2017 Aug;101(4):635-640. doi: 10.1111/jpn.12585. Epub 2016 Aug 26.

Abstract

In rabbits, many studies have investigated the effect of diet, including the fibre intake, on caecal microbiota; however, there are no direct measurements of the influence of diets with different dietary fibre-to-starch ratios and the archaeal community composition in the caecum. We used 16S rDNA sequencing to investigate the impact of different dietary neutral detergent fibre (NDF)-to-starch ratios (1.0-2.3) on the caecal archaeal community in rabbits. The results revealed that the archaeal community from all experimental rabbits was relatively less complex than intestinal bacterial community. High-throughput 16S rDNA sequencing of the gut archaea indicated that the rabbit caecum was inhabited by Methanobrevibacter and Methanosphaera species, and therefore is possibly dominated by two species of archaea. Here, we compared the effect of different diets on the archaeal community in the rabbit caecum and found no significant differences in the diversity and abundance of caecal archaeal community of rabbits that were fed diets with different dietary fibre-to-starch ratios. Therefore, we suggest that the contribution of host-derived substrates to caecal archaea constitution is insignificant.

摘要

在兔子身上,许多研究已经调查了饮食,包括纤维摄入量,对盲肠微生物群的影响;然而,对于不同膳食纤维与淀粉比例的饮食以及盲肠中古菌群落组成的影响,尚无直接测量。我们使用16S rDNA测序来研究不同饮食中性洗涤纤维(NDF)与淀粉比例(1.0 - 2.3)对兔子盲肠古菌群落的影响。结果显示,所有实验兔子的古菌群落相对肠道细菌群落而言复杂性较低。对肠道古菌进行的高通量16S rDNA测序表明,兔子盲肠中存在短柄甲烷杆菌属和甲烷球形菌属,因此可能由两种古菌主导。在此,我们比较了不同饮食对兔子盲肠古菌群落的影响,发现喂食不同膳食纤维与淀粉比例饮食的兔子,其盲肠古菌群落的多样性和丰度没有显著差异。因此,我们认为宿主来源的底物对盲肠古菌组成的贡献微不足道。

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