"A fight is brewing over the practice of feeding chicken feces and other poultry farm waste to cattle.
A coalition of food and consumer groups that includes Consumers Union and the Center for Science in the Public Interest has asked the Food and Drug Administration to ban the practice. McDonald's Corp., the nation's largest restaurant user of beef, also wants the FDA to prohibit the feeding of so-called poultry litter to cattle.
Members of the coalition are threatening to file a lawsuit or to push for federal legislation establishing such a ban if the FDA doesn't act to do so in the coming months.
Farmers feed 1 million to 2 million tons of poultry litter to their cattle annually, according to FDA estimates."