Rongchang boar semen quality evaluation marker and application thereof

The invention provides application of enteric microorganisms and excrement metabolites as boar semen quality evaluation markers, and the enteric microorganisms are one or more enteric microorganisms with the highest abundance difference in boar intestinal tracts from semen to be evaluated. The excrement metabolite is one or more metabolites with the highest content difference in boar excrement from the seminal fluid to be evaluated. According to the method, the abundance of differential intestinal microorganisms and excrement metabolites is associated with the seminal fluid quality, and the influence of appearance indexes of seminal fluid, internal molecular indexes of sperms and external environmental factors on the seminal fluid quality can be more comprehensively evaluated by combining the prior art and a standard seminal fluid quality evaluation standard. 本发明提供了肠道微生物和粪便代谢物作为公猪精液质量评价标志物的应用，所述肠道微生物为待评价精液的来源公猪肠道中丰度差异性最高的一种或多种肠道微生物，所述粪便代谢物为待评价精液的来源公猪粪便中含量差异性最高的一种或多种代谢产物。本发明通过将差异性肠道微生物和粪便代谢物的丰度与精液质量的高低进行关联，可以结