Sure, when they start raising pigs in bathtubs.
They pretty much do. You've never seen a super barn I take it. The pigs live in a pen that is basically a rubber coated grate, little strw, and are showers 3-4 times a day. they are cleaner than most people, never see sunshine, nor is there a fly in the entire place. Even the workers have to walk through a shower and put on a clean one piece work coverall before entering entering the barn.