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-A tentative diagnosis may be made based on clinical signs of the live animal. -BSE does not evoke any detectable immune response or inflammatory reaction in host animals. -There is no test to diagnose BSE in live animals. -Diagnosis can only be confirmed by post-mortem microscopic examination of a deceased animal. -An infected animal�s brain will have characteristic lesions (a spongy appearance). -The BSE agent has been found in brain tissue, the spinal cord, and retina.
-To date, there has been no evidence of infection detected in blood, milk or muscle tissue (Canadian Food Inspection Agency, 2002).
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WHAT SYMPTOMS DO CATTLE WITH BSE EXHIBIT? nervousness or aggressive behavior abnormal posture lack of coordination difficulty in rising from a lying position decreased milk production loss of weight despite increased appetite - Typically, it takes from 3 - 6 years from the time of infection for the clinical signs of BSE to appear (Canadian Food Inspection Agency, 2002).
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