Seroprevalence of brucellosis in yaks (Poephagus grunniens) in India and evaluation of protective immunity to S19 vaccine |
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Authors: | Bandyopadhyay Samiran Sasmal Debasis Dutta Tapan Kumar Ghosh Monoj Kumar Sarkar Mihir Sasmal Nihar Kanta Bhattacharya Mohan |
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Institution: | (1) National Research Centre on Yak, Dirang, Arunachal Pradesh, 790 101, India;(2) Central Agricultural University, Selesih, Aizwal, India;(3) Department of Parasitology, West Bengal University of Animal and Fishery Sciences, 37, Belgachia Road, Kolkata, 700 037, West Bengal, India |
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Abstract: | The present study was carried out to explore the seroprevalence of brucellosis in yaks of North-Eastern hilly yak tracts of
Arunachal Pradesh, India. Of 374 animals tested, 23.79, 21.11 and 18.98% were found positive for brucellosis using avidin-biotin
ELISA (AB-ELISA), Rose-Bengal plate test (RBPT) and standard tube-agglutination test (STAT), respectively. The relative sensitivity
and specificity for STAT were 79.77 and 100%, respectively and the same for RBPT were 88.76 and 100%, respectively in comparison
to AB-ELISA. The alarming prevalence as recorded was highest among the yak cows (31.42%) followed by heifers (23.85%) and
bulls (8.88%). The immune response in yaks following standard dose of calfhood vaccination with Brucella abortus strain 19 vaccine showed that protective antibody level persisted up to 210 days. This is the first report from India on
prevalence of brucellosis and immunization with B abortus strain 19 vaccine in yaks. The present investigation would be a valuable guideline for future control measure and eradication
programme of brucellosis in yaks. |
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Keywords: | AB- ELISA Brucellosis STAT Strain 19 RBPT Yak |
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