Extending human ethics toward non-humans is a questionable endeavor at best. That being said, I personally don't like extra unnecessary suffering, which is why I prefer eating humanely raised and killed animals.
Taking the minimization of suffering to its logical conclusion, however, animals suffer in the wild without human intervention, so the most humane thing to do would be to exterminate them all. This would prevent any future suffering entirely.
Surely you see a problem with such a utilitarian approach?