瘤胃微生物与饲粮脂肪酸间的相互作用

Interaction between Ruminal Microbes and Dietary Fatty Acids

脂肪酸是反刍动物重要的营养物质。一方面,脂肪酸对于反刍动物瘤胃微生物生长具有抑制作用,尤其是不饱和脂肪酸的抑制作用更明显;另一方面,瘤胃微生物群落能够通过生物氢化作用将不饱和脂肪酸氢化为饱和脂肪酸。本文针对饲粮脂肪酸与瘤胃微生物之间的相互作用进行了综述,涉及的研究方法包括体外培养法以及动物试验研究,结合分子生物学技术方法,为通过饲粮脂肪调控瘤胃微生物群落或结构提供新思路。

Fatty acid is one of key dietary nutrients for ruminants. It inhibits the growth of ruminal microbes,of which unsaturated fatty acids（ UFAs） shows strongly negative effect of microbe growth. However,ruminal microbes in turn convert UFAs to saturated fatty acids through biohydrogenation. This reviewintroduced the interactions between dietary fatty acids and ruminal microbes,investigation methods including in vitro culture,animal feeding method and molecular biochemical methods were reviewed,which allowed people to gain newinsights into the manipulation of ruminal microbiota by dietary fat acids.