多种生物学的洞察力转的微生物组和牧羊羊的功能:对营养吸收和草原可持续性的影响
Xiuhua Ma1, Bing Wang1, Minle Xu2
1State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China.
Microbiome
|December 12, 2025
概括
可持续的牧场依赖于了解肠微生物和肠道细胞如何处理草. 这项研究揭示了影响动物健康和营养代谢的关键相互作用,为优化牲畜饮食和草原管理提供了见解.
科学领域:
- 动物营养和微生物组研究.
- 动物生理学和新陈代谢.
- 可持续的草原管理
背景情况:
- 的微生物消化能力对于将料转化为动物产品至关重要.
- 了解饮食,反动物微生物组和宿主生理学的相互作用,对于反动物的生产力和生态系统健康至关重要.
- 草种,料补充剂,肠微生物和肠上皮的功能之间的相互作用尚未得到充分理解.
研究的目的:
- 为了研究肠微生物群如何影响草食量和宿主新陈代谢.
- 探索放牧强度和缩补充剂对反功能和宿主生理学的影响.
- 为了确定关键的微生物和宿主细胞参与营养消化和新陈代谢.
主要方法:
- 肠微生物组的元基因组和元转录组分析.
- 壁的单细胞RNA测序 (scRNA-seq) 进行测序.
- 血清代谢组学来分析宿主代谢概况.
- 这是一项由72只羊羔参与的双因素实验,涉及放牧和缩剂补充.
主要成果:
- 在适度放牧的补充养改变了干物质和草的摄入量,影响了特定的植物消费 (例如,Artemisia tanacetifolia).
- 观察到肠微生物组 (Lachnospiraceae) 的变化,与饮食变化相关.
- scRNA-seq确定了皮上皮细胞亚型 (基底细胞,角质细胞) 的增加,并突出了溶解物载体基因在短链脂肪酸运输中的作用.
- 肠微生物组与宿主上皮细胞之间的相互作用与宿主血清营养代谢有关,包括B族维生素,胆汁酸和氨基酸.
结论:
- 确定了参与草消化和短链脂肪酸代谢的关键小肠微生物和上皮细胞亚型.
- 研究人员发现了小肠微生物功能,上皮细胞基因表达和宿主新陈代谢之间的新联系.
- 研究结果为优化在可持续放牧系统中的反动物管理策略提供了关键的见解.
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