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Slaughter Condemnation & BLV

Lymphoma induced by BLV is the largest single reason that US cattle are condemned during postmortem inspection at slaughter plants. Surveys indicate that lymphoma accounts for 13.5% of beef cattle condemnations and 26.9% of dairy cattle condemnations at US slaughter plants10,11. In a study of 7,760 California dairy cattle44, 52 carcasses were rejected at slaughter. Of the 52 rejected carcasses, 42 were diagnosed by histopathology for lymphoma44. Overall, lymphoma has been estimated to cost the U.S. dairy industry more than $16 million annually45. The cost for the individual producer is estimated to be $412 per case of lymphoma for a herd with 50% prevalence of BLV infection46.