Evaluation of an enzyme linked‐immunosorbent assay for the diagnosis of Brucella ovis infection in rams

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Abstract
SUMMARY: A simple enzyme linked immunosorbent assay (ELISA) was developed for the serological diagnosis of Brucella ovis infections in rams. Serums from brucellosis accredited‐free flocks and flocks known to be infected with B. ovis were tested and the results correlated with warm complement fixation (CF) test and bacteriological examination of semen. Both the ELISA and the CF test detected 0.5% false positive reactions in rams from clinically negative flocks. However the ELISA detected significantly more positive reactors in infected flocks and the CF test failed to detect some rams excreting B. ovis. The ELSA proved to be a valuable test in eradicating brucellosis from infected flocks.