Oh, makes sense. That's not food, though; that's a very easy organ(?) transplant.
You don't transplant the organ but the feces. They get processed in the intestine. Stuff that enters the body to be processed in the intestine is food for some definition of "food".
But once you accept the goal to get feces into the gut, the way is only a detail that's open to change.
No, I know that the colon is not transplanted; the flora is. Hence the (?). Also, it hopefully doesn't get processed but rather survives to colonize the gut. Further, an enema would probably be far more effective, given its lack of strong acid and pepsin designed to kill the flora.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.