Field Evaluation of the rough mutant Brucella abortus RB 51 vaccine in cattle
Hosein, H., El-Sheary, M., El-Sherif, A., Ibrahim, K. (2005). Field Evaluation of the rough mutant Brucella abortus RB 51 vaccine in cattle. EKB Journal Management System, 15(2), 252-254. doi: 10.21608/jvmr.2005.78004
H. I. Hosein; M. N. El-Sheary; A. M. El-Sherif; K. M. S. Ibrahim. "Field Evaluation of the rough mutant Brucella abortus RB 51 vaccine in cattle". EKB Journal Management System, 15, 2, 2005, 252-254. doi: 10.21608/jvmr.2005.78004
Hosein, H., El-Sheary, M., El-Sherif, A., Ibrahim, K. (2005). 'Field Evaluation of the rough mutant Brucella abortus RB 51 vaccine in cattle', EKB Journal Management System, 15(2), pp. 252-254. doi: 10.21608/jvmr.2005.78004
Hosein, H., El-Sheary, M., El-Sherif, A., Ibrahim, K. Field Evaluation of the rough mutant Brucella abortus RB 51 vaccine in cattle. EKB Journal Management System, 2005; 15(2): 252-254. doi: 10.21608/jvmr.2005.78004

Field Evaluation of the rough mutant Brucella abortus RB 51 vaccine in cattle

Journal of Veterinary Medical Research
Article 42, Volume 15, Issue 2, March 2005, Page 252-254  XML PDF (120.31 K)
Document Type: Original Article
DOI: 10.21608/jvmr.2005.78004
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Authors
H. I. Hosein1; M. N. El-Sheary2; A. M. El-Sherif1; K. M. S. Ibrahim2
1Deptartment of Veterinary Medicine, Faculty of Veterinary Medicine, Beni-Suef, Cairo University, Egypt
2Deptartment of Veterinary Medicine, Faculty of Veterinary Medicine Suez Canal University, Egypt
Abstract
In this study field application of RB51 vaccine combined with the policy of test and slaughter as well as application of hygienic measures for control of bovine brucellosis were carried out and evaluated in a dairy herd of cattle for two years. Serological examination of 1280 cattle using tube agglutination, buffered acidified plate antigen, Rose Bengal plate antigen and Rivanol tests revealed 240 (18.75%) positive animals with a previous history of abortion of 12 cows. Brucella melitensis biovar 3 could be isolated from tissue specimens of slaughtered cows. Animals that tested negative in the first examination were vaccinated with RB 51 vaccine with periodical examination every three weeks and slaughtering of positive cases. New positive cows continued to develop up to the 5th examination then three successive sero-negative tests were obtained with release of the farm from quarantine. Examination of animals 6,12,18 and 24 months post release of quarantine revealed 2, 3, 0 and one positive cases respectively the matter which clarified that the control of the outbreak using RB51 vaccine associated with policy of test and slaughter and application of hygienic measures showed some limitations.
Keywords
Evaluation; the rough; mutant; Brucella; abortus; vaccine; RB 51; cattle
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