were conducted. The clinical findings of the disease were loss of wool, dyspnea and coughing, progressive

condition loss, exercise intolerance and chronic mastitis. Nervous signs were developed later and were

characterized by gait abnormalities of the hind limbs, ataxia, tremor of facial muscles and recumbency.

A definitive diagnosis was made by characteristic clinical history, gross and histopathological lesions and

detection of seropositive animals by ELISA.