Since I made this answer, I've learned that marinades can contain wheat-based proteins, and I actually found some corned beef at the supermarket that listed some wheat protein on the ingredient list. Sausages of course often have rusk in the them, and cutlets of various kinds are crumbed. So it isn't quite a claim as daft as it sounds. Sad but true.
It just sounds like they're riding the gluten free wave to promote cheap factory farmed beef. Not everyone realizes that cows are grass eaters by nature. I've seen plenty of restaurants boosting of their corn fed beef...hopefully the grass fed wave will crash ashore soon, and become the norm again.
its a Pub mate, they severe beer, there is a slice of gluten bread in evey glass. as for the beef they just feed it corn, nothing special about that now is there? it would be strange if they fed it wheat.
The animal converts food proteins into animal proteins by breaking down their structure during digestion (amino acids are separated and then repackaged during metabolism). Therefore, the meat will never contain any consumed proteins in their intact form. Meat, regardless of what the animal is fed, will not contain any gluten. The only way gluten could be in the meat is if the meat has been processed using fillers or if breading or some other type of preparation is done that adds a product containing gluten. But meat, by itself, is always gluten-free.”