COMPARISON OF THE RESULTS OF CARD, RIVANOL, COMPLEMENT-FIXATION, AND MILK RING TESTS WITH THE ISOLATION RATE OF BRUCELLA-ABORTUS FROM CATTLE

  • 1 July 1986
    • journal article
    • research article
    • Vol. 47  (7) , 1529-1531
Abstract
Specimens from 4,553 cows were examined by card, Rivanol, and complement-fixation (CF) tests and bacteriologic culture. A ring test was performed on milk from 1,003 of these cows. The isolation rate of Brucella abortus correlated directly with antibody titers, and the field strain predominated in adult-vaccinated cows when the Rivanol test titer was > + 100 and the CF test titer was > 4 + 40. The CF test had the best balance of sensitivity and specificity in adult-vaccinated cows. The false-negative rate for the Rivanol and CF tests was higher in nonadult-vaccinated cows.