But I don't know the answer so I'll ask it. Say you have a milk cow and she has a bull calf. Is there any reason you couldn't keep this calf till it's a full grown bull, breed it back to the cow in hopes of getting another bull calf, then slaughter grown bull for beef and start over again? Would this cause horrible deformities or something from inbreeding? Obviously endless generations of it would, but how long would that take? I know people inbreed other animals, just wondering if it's done in the bovine world. Thanks.