"Tyson Foods, the world's largest meat processor and the second largest chicken producer in the U.S., has admitted that it injects its chickens with antibiotics before they hatch and then labels them as raised without antibiotics. The U.S. Department of Agriculture (USDA) has told Tyson to stop using the antibiotic-free label, but the company has sued for the right to keep using it.(!)" More here...Some observations about deceptive practices by the industrial food establishement Dr. Mercola here...
"Tyson’s claim may be technically true -- which makes it just about the worst kind of deceptive advertising there is without outright lying. It’s this kind of semantics that can drive even the sanest person wild.
When they say that their chickens are “raised without antibiotics", they are clearly trying to give the impression that their chickens do not contain any kind of antibiotics.
However, the chicken on your plate is anything but antibiotic-free since they’ve injected the eggs with antibiotics, and raised the hatchlings on feed that contains antibiotics..." More here, bottom of page.