增加年均体重增加与明显的便微生物概况有关
Brianna N Maslen1, Christian Duff2, Samuel A Clark3
1Gulbali Institute, Charles Sturt University, Boorooma Street, Wagga Wagga, NSW 2678, Australia.
Animals : an open access journal from MDPI
|October 14, 2023
概括
肠道微生物群显著影响牲畜生长性能. 这项研究在安格斯公牛中发现了明显的便微生物特征,在年龄阶段的平均每日增量 (ADG) 高低,这表明肠道细菌和生长之间存在联系.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 基因组学就是基因组学.
背景情况:
- 肠道微生物群落在牲畜生理过程和生产特征中起着至关重要的作用.
- 动物生产特征,特别是生长性能,对于畜牧企业的利能力至关重要.
- 以前的研究表明,肠道微生物群组成和牲畜生长性能之间存在相关性.
研究的目的:
- 描述和比较表现出高和低平均每日增益 (ADG) 的安格斯牛的便微生物特征.
- 为了研究这些微生物的差异,无论是断奶和年龄的发展阶段.
- 为了确定肠道微生物群的组成是否与肉牛的生长性能差异有关.
主要方法:
- 从高和低ADG分类的Angus牛身上收集了直肠便样本.
- 使用16S rRNA基因测序来分析微生物群落的特征.
- 分析包括对相对丰度,LEfSe,α多样性 (物种丰富性) 和β多样性 (族系相似性) 的比较.
主要成果:
- 在断奶阶段,在高ADG和低ADG组之间观察到很少有显著的微生物差异.
- 在年龄阶段,高ADG组和低ADG组之间出现了微生物特征的显著差异.
- 八个类和六个属的相对丰度显著不同;高ADG组的物种丰富性下降 (p=0.001),β多样性清楚地分离了这些组 (p=0.005).
结论:
- 安格斯牛的肠道微生物概况在每日平均增益高低之间存在显著差异,特别是在年龄阶段.
- 减少物种丰富性和肠道微生物群的基因相似性变化与更高的生长性能 (ADG) 有关.
- 这些发现凸显了针对肠道微生物群的潜力,以提高肉牛的生长性能.
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