The cow disease has not been detected in American cattle, he said.
Evidence of mad cow disease has never been found in young cattle.
It has since killed about 80 more people and spread in cattle throughout Europe.
Indeed, it costs at least $600 million a year in lost cattle or low carcass weight.
Most of the people are employed in cultivation and cattle.
He called for more protection against disease in imported cattle.
Death occurs over days or weeks and is usually in cattle 6-18 months of age.
I've got men up in the high country and cattle that need to come down.
But since the Stone wars the market in cattle and corn is down.
Other ethnic groups are today becoming more involved in cattle raising.