Cows and chicken has got to be sentient if they go by that definition, but since they cannot give up their steak and chicken nuggets, they will conveniently omit them from the list
There's no sane way to acknowledge that these animal are sentient and should therefore not suffer and still be ok with farming and eating them. In practice, the vast majority of animal products come from conditions that definitely cause suffering.
BUT, even a close to perfect farm would still cause unnecessary suffering, because eating animals is unnecessary. The same unnecessary as dog fighting, bestiality or eating cats, just for reference.