Abstract
The study compared the performance of three screening serological tests: buffered plate antigen (BPA), RoseBengal produced with 1119-3 Brucella abortus strain (RB1119-3), and Rose-Bengal produced with 99 Brucella abortus strain (RB99). Sera from 696 adult female animals were submitted to BPA, RB1119-3, RB99, 2mercaptoethanol test (ME), and complement fixation test (FC). The gold standard was the combination of CF and ME. The Kappa values for BPA, RB99, and RB1119-3 were 0.82, 0.74, and 0.70, respectively. The relative sensitivity and specificity for the same tests were 0.98 and 0.96, 0.92 and 0.94, and 0.95 and 0.92, respectively. These results indicate that BPA is a better screening test than RB for buffalo, regardless of the B. abortus strain in RB.
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