Field Evaluation of the rough mutant Brucella abortus RB 51 vaccine in cattle
Journal Title: Journal of Veterinary Medical Research - Year 2005, Vol 15, Issue 2
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.
Authors and Affiliations
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
Keywords
Related Articles
- EP ID EP682723
- DOI -
- Views 246
- Downloads 0
Distribution pattern of intestinal helminths in domestic pigeons (Columba livia domestica) and turkeys (Meleagris gallopavo) in Beni-Suef province, Egypt
Parasitic helminths of pigeons and turkeys are worldwide spread causing mortalities and considerable economic losses. Accordingly, intestinal tracts of domestic pigeons (Columba livia domestica) and domestic turkeys (Mel...
Seroprevalence of Babesia ovis in small ruminants in Siwa Oasis, Egypt
Seroprevalence of Babesia ovis in sheep and goats was studied in Siwa Oasis between January 2002 and January 2003. A total of 240 blood samples were collected from 108 sheep and 132 goats for preparation of blood smears...
Effect of seasonal variations on performance and parasitic infestation of cultured fish in Fayoum governorate
A field study was carried out in a fish farm to study the effect of seasonal variations during the production period on performance and parasitic infestation of cultured fish. Water samples were obtained to determine the...
A study on the effect of age, breed and season on sexual behaviour, testosterone concentrations and scrotal circumference in Egyptian rams
The objective of this study was to detect the influence of age, breed and season on sexual behaviour, testosterone concentrations and scrotal circumference in Egyptian rams. The study was carried out at agricultural rese...
Quality assurance of yoghurt during processing
he present study was carried out to determine the critical points during processing of yoghurt, through examination of Acidity % and Storch's test to detect the efficiency of heat treated milk samples and Microbiological...