date:Apr 26, 2012
Clifford said that wasn't the case with this cow.
Animal-disease scientists said this atypical form of mad-cow disease is a rare case in which a cow incurs the disease spontaneously--not from eating feed that contains the remains of an infected cattle. (The practice of using cow byproducts in cattle feed is now banned in the U.S.)
Atypical cases of mad-cow disease are very rare, spontaneous occurrences in which brain proteins misfold, said Jim Roth, a professor in the college of veterinary medi