WICHITA, Kan. - Tyson Foods Inc. told cattle feeders it will no longer buy animals fed a supplement that's designed to bulk them up before slaughter, citing experts who suggest the drug may be causing cattle to become lame.

The decision by the food giant has raised concerns from industry experts that less beef will be available, which would drive up consumer prices.

The growth-inducing drugs are approved by the U.S. Food and Drug Administration and help feedyards get roughly 25 more pounds of beef from each carcass. They've been increasingly used to offset dwindling cattle herd numbers, especially in the face of last year's drought.