Random-Rambling
According to “Putting Your Hoof Down”, goats do appears to be sapient (they’re Iron Will’s assistants), but not able to speak “Equestrian”. Fortunately, Iron Will speaks Goat.
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@gasmaskangel
Incidentally, pigs aren’t shown to be sapient in the show. I’m not sure about goats, but they’ve never talked and one seemed to be one of Fluttershy’s pets, so I don’t think that they are sapient, either. So there are some large non-sapient animals that could be raised for meat, along with chickens and, well, rabbits. Carnivores has options, even in Equestria.
According to “Putting Your Hoof Down”, goats do appears to be sapient (they’re Iron Will’s assistants), but not able to speak “Equestrian”. Fortunately, Iron Will speaks Goat.