They perform exactly the same function in the animals as they do for us, so they grow in the same location. Yes the animals would be butchered in the removal process. Why is that any more dystopian than killing them at a butcher?
Factory farms are also an aberration and a crime against sentient beings. This just adds a dollop more "cruel and unusual" and it's not saving lives it's torturing and sacrificing one feeling, thinking, and intelligent life so a human can live another 5 years.