Theoretically :
to this:
A discussion on vegetarianism:
In the village, meat will be on the table only on holidays. It is simply irrational to cut a cow while it is breastfed or a chicken while it is carried.
Yyy: And pigs with bulls and cockroaches doying or carrying?

A bull is needed for cows to give birth to calves, without it they will not have milk. The cock needs the chickens to carry. And pigs are fed to a certain weight, before the time to cut is not reasonable.

In order for cows to give birth, they make insemination, which is much cheaper than the maintenance of a bull in every farm; chickens-bearers can be carried at all without a cock; dairy pigs are much more delicious than pork.
Life is pain. habituate to