Although, unless you have a fistulated cow with a big hole in its side, and you can put your hand into its rumen, it's hard to imagine that the delivery of microbes directly into the mouth and through the entire top of the digestive tract is the best delivery system, so you may have heard in people they are now doing fecal transplants, where rather than delivering a couple of probiotic microbes through the mouth,
但是，除非你有一头身上装了研究反刍消化装置的牛，肚子一侧开了个大洞 你可以把手伸进它的瘤胃 很难想象从嘴巴经过整个消化道上部 传输微生物 是最好的传输方式 所以你们可能听说过有人在做 粪便移植，与其将少数益生菌种 从口腔传入体内