so is there anybody on here feedin theyre dogs a raw diet of meat from the local supermarket, such as tyson, foster farms ect.?

reason i ask is i remember somebody saying something about mainstream market meats containing antibiotics and growth harmones and such, about how it doesnt affect us because we cook it, but feeding it to them raw immunizes them from antibiotics. is this fact or theory?? im curious how many of you shop at the local winco and get your 10lbs of chicken?!?!