Never raised a cow. But I've bought suckling pigs a couple of times. Raise them to 180-225lbs, feed them oats, household garbage, whatever 'bad' produce local grocer gives away, they eat anything, and are fun to watch. Neighbors don't like it much, though.
Amazing. It's like, this is what pork is supposed to taste like...? Unbeatable, moist, tender, rich, rich flavor.