适当的粒度大小的米草促进了肠发酵,并在肠仿真技术系统中调节了细菌微生物群
Zhiqing Li1, Huijing Qiu1, Xinyi Lan1
1College of Animal Science and Technology, Hunan Agricultural University, Changsha, China.
Frontiers in veterinary science
|June 28, 2023
概括
米的颗粒大小显著影响山羊的功能. 通过改变微生物群落,4毫米颗粒大小最大限度地增加了营养物质的消失和挥发性脂肪酸的产生.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 微生物组研究 微生物组研究
背景情况:
- 米是一种常见的反动物料,但其物理形式会影响消化.
- 了解颗粒大小的影响对于优化反动物饮食和料效率至关重要.
研究的目的:
- 为了研究不同大小的米颗粒如何影响原生,营养消化,发酵和微生物种群.
- 为了确定最佳的米吸管颗粒大小,以改善反动物的消化和挥发性脂肪酸 (VFA) 生产.
主要方法:
- 使用了三种大小的米颗粒 (2毫米,4毫米和未指定的) 的模拟技术 (RUSITEC).
- 进行了一项为期10天的体外发酵实验,使用山羊的总混合配给 (TMR).
- 分析的原生动物数量,营养物质的消失,VFA度和微生物群体组成.
主要成果:
- 4毫米米草组显示有机物消失和VFA度 (乙酸盐,酸盐,异酸盐) 显著更高.
- 在小组之间没有观察到肠微生物的α多样性的显著差异.
- 特定的细菌属 (Prevotella,Ruminococcus) 与4毫米组中改善的营养消化和VFA产生有关.
结论:
- 4毫米大小的米颗粒增加了羊的营养消化能力和挥发性脂肪酸的产生.
- 通过对大米粒颗粒大小的饮食操纵,可以调节肠微生物群落,以提高动物的表现.
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