Sure, but GP was talking about religion. I've never heard of a religion encouraging its followers to eat meat. The biggest ones generally discourage at least some kinds of meat.
Can’t get much more primal than Genesis 1.
Genesis 1 says "I have given you every plant yielding seed ... and every tree with seed in its fruit. You shall have them for food." Likewise to the animals, "I have given every green plant for food."
I can't imagine the spirit of such words carries with it the grotesqueries and indignities we're wont to inflict on our fellow sufferers. Nor for that matter the free reign over our environment. Instead I would espouse that the spirit is the maintenance of their well-being. As might a parent, or a landowner with some interest in his lot.
At least that's my reading of 1 Timothy 4:3