It's easier for humans to process corn when they feed it to the hogs, then eat the hogs.
Hogs will eat zombies also.
Not to belabor the point, but I would stay away from the zombies until they are eaten by the hogs. There will be a lot of zombies running around. (ala Obama voters and libtards)but they will be initially inedible. They will probably eat out of dumpsters, have infectious diseases and generally be a health risk. After the wild hogs eat them and use their enzymes to get rid of the toxic elements, they should be alright. Yes, the wild game like deer, rabbits stray dogs, cats, opossums, etc. will be gone in the 1st few weeks. But a prime Occupy-type vegan should be the escargo of the apocalypse. Now I do not justify cannibalism, but in the cases of extreme emergency (ala Survive, Leningrad, Mountain Phil, Donner Pass, etc.)the Church will consecrate the food items to preserve life.