I’m pretty sure, that both cow and calf are screaming when they are separated shortly after birth. Alnost like a mother and her baby have an emotional bond.
And even the smallest farm will absolutely kill them once they aren’t profitable anymore, or they’d have an ever increasing population of animals.
Canned (and cooked) tuna, mussels, shrimps, reindeer, rabbit, beef etc of course. /s
Given that pretty much everyone just buys canned pet food or kibble at the store, and most of those are made out of whatever is left over after slaughtering animals for human consumption, the whole point of “forcing your cat to eat against its natural habits” is somewhat moot.