Walter Lilenbaum, Guilherme Nunes de Souza, Leila de Souza Fonseca


Abstract


With the purpose of identifying management factors that may be influencing the prevalence of bovine tuberculosis under tropical conditions, namely in Rio de Janeiro, Brazil, 1632 cows were tested through the single cervical tuberculin test. A questionnaire was completed for each herd. A total of 207 positive reactions were observed, corresponding to 12.7% of the studied cattle. The main factors observed that may be influencing the prevalence of bovine tuberculosis on those farms were the absence or reduced veterinary assistance and the herd size. The presence of adequate cattle houses and the highly intensive management are also considered to be likely to influence the prevalence of the disease. Under tropical conditions, a tuberculosis control program, in addition to the test-and-slaughter control method, should include an investigation of herd management practices to try to identify factors that are likely to influence the prevalence of the disease.


Keywords: tuberculosis, bovine, epidemiololgy, M. bovis, Brazil.

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