Sheep Arrive at Lab for Mad Cow Testing

A flock of 233 Vermont sheep the government fears were exposed to mad cow disease arrived at the nation's premier veterinary laboratory in Ames, where they will be killed and their brains tested.

The Agriculture Department seized the sheep Wednesday from a farm in Vermont and transported them under police escort.

Agriculture Department spokesman Ed Curlett said the seizure was the first of any cow or sheep in the U.S. suspected of having an illness related to mad cow disease.