多态学分析揭示了影响牛平均每日收益的分子机制
Mingjuan Gu1, Hongyu Jiang1, Fengying Ma1
1College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010010, China.
International journal of molecular sciences
|March 13, 2025
概括
这项研究表明,肠道微生物群,宿主基因和新陈代谢,特别是胆酸通路,影响牛的生长. 这些发现提供了改善肉牛生产和精密育种的生物标志物.
科学领域:
- 动物科学动物科学
- 基因组学就是基因组学.
- 微生物学 微生物学
背景情况:
- 平均每日增益 (ADG) 对畜牧业经济至关重要,但其潜在的分子机制尚未完全理解.
- 遗传因素影响牛的生长,需要对监管途径进行更深入的研究.
研究的目的:
- 阐明推动高 (HADG) 和低 (LADG) 安格斯牛之间的ADG分歧的分子机制.
- 探索肠道微生物群-宿主基因代谢轴在调节ADG中的作用.
主要方法:
- 综合的多omics分析包括16S rRNA测序,便代谢学和血液转录学.
- 根据生长表现将30只安格斯牛分为HADG和LADG群的分类.
- 斯皮尔曼相关性分析,以确定微生物种类,基因和代谢物之间的关系.
主要成果:
- 观察到肠道微生物群组成的显著变化,在HADG牛中增加了Firmicutes,减少了Bacteroidetes/Proteobacteria.
- 凯格通路丰富分析强调胆酸代谢是受差异表达基因和代谢物影响的关键通路.
- 在肠道微生物*Oscillospira*,宿主基因 (*ZBTB20*, *RADIL*) 和微生物群体 (*dgA-11_gut_group*) 之间确定了特定的相关性.
结论:
- 肠道微生物群-宿主基因代谢轴,特别是胆酸代谢,在安格斯牛的ADG分歧中发挥着重要作用.
- 识别的多omics生物标志物为基于机器学习的ADG预测模型提供了基础.
- 生物标志物的因果作用需要进一步验证,未来的研究应该包括不同的品种和性别,以评估概括性.
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