I can only agree with the posts to date.
If your personal choices are, ironically, causing harm to your dog, either adjust your ethics to allow you to be responsible for the dog you chose to own, or re-home it.
Visiting your views on a dumb animal by feeding it a diet that suits your concience rather than his stomach, is cruel.
Adjust or re-home, your choice - your dog doesn't have the luxury of your choice so do the right thing by him.