TY  - SER
AU  - Azzam,R.A.
TI  - Evaluation of trials of vaccination and revaccination of cattle using RB51 and S19 vaccines by monitoring of the serological response and shedding of the vaccinal strains
KW  - Cattle
KW  - Vaccination
KW  - Brucellosis in cattle
KW  - Immune response
KW  - Microbiology
N1  - Includes references
N2  - In this study, evaluation of three trials of vaccination of cattle against brucellosis through monitoring of the serological immune response and shedding of the vaccinal strains was carried out. For this purpose, a total of 84 Friesian cows were divided into three groups. The first group consisted of 42 cows that were vaccinated at the age of 5-8 months with Brucella abortus SRB51 vaccine and then revaccinated at the age of 20-22 months with the same vaccine. Animals of the second group (24 cows) were vaccinated at the age of 5-8 months with Brucella abortus S19 then revaccinated with RB51 vaccine at the age of 20-22 months, while animals of the third group (18) were vaccinated only at the age of 5-8 months with Brucella abortus S19
UR  - http://nile.enal.sci.eg/EALE/2007/AVMJ/5307/114/181.pdf
ER  -