There's no such thing as a "farm animal"
I notice that lately many vegans have been starting to say, "farmed animal" instead of "farm animal", and I realize why. This rightful shift in semantics subtly implies that humans have arbitrarily chosen to farm them, as opposed to the carnist implication that the animals are meant to be farmed.
Farming an animal is wrong no matter whether our culture designates it as a "farm animal".
When referring to the species that happen to be farmed, say "conventionally farmed animal species".