Cattle Tumble Most in 11 Months as Mad-Cow Disease Found in U.S.

Cattle tumbled the most in 11 months in Chicago, and feeder-cattle prices fell by the exchange limit as a case of mad-cow disease was reported in the U.S. Corn, used in livestock feed, also slumped.

A case of mad-cow disease has been found in a dairy cow in central California, John Clifford, the USDA’s chief veterinarian, told reporters today in Washington. Its meat did not enter the food chain and the carcass will be destroyed, Clifford said. This is the fourth confirmed case of the brain-wasting disease in the U.S. cattle herd since the first was discovered in December 2003 in an animal that came from Canada.