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Identification of biovars of Brucella abortus in aborted cattle and buffaloes herd in Sri Lanka

Author(s): M. A. R. Priyantha

Journal: Veterinary World
ISSN 0972-8988

Volume: 4;
Issue: 12.000;
Start page: 542;
Date: 2011;
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Keywords: Bovine | Brucellosis | Sri Lanka | Endemic disease | Occupational health Hazard | Zoonoses | Laboratory Techniques | Biovars

Bovine brucellosis is an endemic disease in Sri Lanka, caused by Brucella abortus and had been reported all part of the country for last six decades. Since available biovar is still unknown, the objective of the study was to identify the biovar of B.abortus from sporadically aborted cattle and buffaloes. Samples were collected from 18 aborted herds out of 19 herds of Cattle and Buffaloes in the year 2010. Rose Bengal plate test and Compliment Fixation test were carried out. Milk, vaginal swabs, placental contents and aborted fetus were collected and cultured by conventional bacteriological methods. The detection of biovars were based on growth on Thionin and Bacto fuschin,CO2 requirement, H2S production, serum agglutination with Brucella negative, A,M and R reference antiserum. Eighteen herds investigated out of 19 herds reported, 11 herds were serologically positive for brucellosis (61.11%) and only Brucella abortus were isolated from 8 individuals from six herds. All were identified as Biovar 3 of Brucella abortus. [Vet. World 2011; 4(12.000): 542-545]
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