Maybe not necessarily the dairy cow herself, but she needs to be pregnant about once per year so she doesn’t stop producing milk. That means that the calves inevitably need to be slaughtered (as well as older dairy cows) or else the herd would keep growing year after year.
It could happen if republican members of the house and senate weren’t such cowards/ ghouls/ shills that would rather help a fascist stay in power than admit their party is wrong.