FDA bans cow blood in livestock feed Associated Press WASHINGTON -- The government is outlawing cattle blood in livestock feed and the use of cow brains and other parts in dietary supplements, part of broader restrictions in wake of the nation's first known case of mad cow disease. The Food and Drug Administration announced steps late today to close loopholes in its livestock feed ban -- a key protection against the spread of the brain-wasting disease in cattle -- and to make sure that people don't consume risky animal parts in processed foods and supplements. "The steps we're taking today...