Bulls sold in Montana are linked to animal with mad cow disease

HELENA - Five bulls from a Canadian herd linked to a cow that tested positive for mad cow disease earlier this year were shipped to Montana six years ago and have since been slaughtered, state livestock officials confirmed Wednesday.

However, state and federal officials were quick to note that they do not believe any of the bulls had the disease, noting that other animals linked to the infected cow have so far tested negative.

Karen Cooper, spokeswoman for the Montana Department of Livestock, said none of the bulls showed the clinical signs of mad cow disease at slaughter. What became of the c...