Chicken consumption has doubled in the U.S. since 1980, breezing past beef in 2010. But nearly three-quarters of production costs in the industry are bound up in what the birds eat. Chicken consumption has doubled in the U.S. since 1980, breezing past beef in 2010. But nearly three-quarters of production costs in the industry are bound up in what the birds eat. Agriculture Phys.org – latest science and technology news stories