I've noticed at Whole Foods and the local supermarket that they offer "Natural Beef" for a premium. They are not organic. Here are the words used: No antibiotics or hormones, never fed animal by-product, strict vegetarian diet, fed only grains.
How does this differ from the "other" meat? I thought recent changes made usage of animal bi-products illegal for cows? Is this really the only difference... I know that chicken waste has been mixed into feed in the past.
If a cow makes a stop at a feedlot and is fed corn - a grain - it will require antibiotics for digestion so I don't understand how that cows could not receive antibiotics.