I am thinking raisng one or two beef cows is a money loosing proposition. By the time you add in purchase price, vet, upkeep, doodads around the barn, grain, butcher costs, not to mention your time and labor, youd be better off working a couple extra hours a week at a job and just buying the meat. There is a reason cattle ranches out west do best. They get to graze on taxpayers grass, the ranchers grow their own grain. If you are buying cattle feed, youd be better off just buying the beef.
I am thinking chickens would get you way more meat per dollar spent. Lot easier to feed also. They eat pretty much anything. I buy deer baiting corn in the spring for dirt cheap from sporting stores. Lots of eggs and you can handle the butchering on your own.
Supposedly catfish are the best food in lb of meat out animal to raise. How about a big catfish farm ?