We don't breed people to eat them, we don't farm animals to provide pets.
Farming is commercially sensitive, people aim to make a living out of the profit from it.
I don't think so, the problem with using vaccine is twofold
1) vaccinated animals have the same antigens as infected animals, so differentiating them is impossible 2) you are unlikely to be able to sell vaccinated animalsPerzactly and we import a lot of meat, so once we cannot export meat we still have imports which cannot be displaced, farming is dynamic, it's not like a factory that can stop production, once an animal has reached the size for its market it cannot be held in limbo.
When the epidemic is finished, then you need to wait until the all the country's susceptible beasts no longer exhibit any antigens, by which time, in the face of imports, there will be no livestock producers left standing.
Last time there was no possibility as there wasn't the vaccine (at first).
AJH