Just wait until your neighborhood, your religious group, your race or your voting history identifies you as an “at-risk” population.
When it does hit the fan, the wildlife and livestock will be wiped out within days. Sadly, out of ignorance and stupidity, most of the meat will either be left on the dead animal or will not be preserved properly.
I have far less confidence in increased numbers of hunters than most people on here. I do not think that non-hunters can bag much more than a few horses, mules, and an occasional cow. As for the regular hunters, most of them drive from the city or at least suburbs. There will be a whole lot less driving if things get ugly. I'm not convinced we'll see a huge drop in big game populations.