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, they are delivering a community of probiotics, a community of microbes from a healthy donor, through the other end.
Iako, osim ako imate kravu sa velikom fistulom na boku pa možete staviti ruku u njen burag, teško je zamisliti da je dostava mikroba direktno u usta i kroz cijeli gornji probavni sustav najbolji način dostavljanja, tako da ste možda čuli da ljudi sada rade fekalne transplantacije, u kojima, umjesto da se nekoliko probitičkih mikroba unosi oralno, zajednica probiotika, zajednica mikroba dostavlja se od zdravog donora kroz drugi kraj.