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OJVRTM
Online Journal of Veterinary Research©
Volume 17(9):524-527, 2013. Extensively redacted 2017.
Effect of live clone vaccine on humoral immune
response against Newcastle disease in
broilers
Mayahi M DVM
PhD, Talazadeh
F DVM PhD and Sina M DVM.
Department of Clinical
Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Iran
ABSTRACT
Mayahi M, Talazadeh F, Sina M.,
Effect of live clone vaccine on humoral immune response against Newcastle
disease in broilers, Onl J Vet Res., 17(9):524-527,
2013. The
effect of live clone vaccine on
humoral immune response in groups of 30 chickens each against Newcastle disease
given by eye drop and/or drinking water is
described. Serum antibody levels were determined by the hemagglutination
test at 9, 18, and 42 days of age.
One group was vaccinated via eye drop or in drinking water on the 9th
and 18th day of age respectively and another using the same
schedule, in drinking water only. Results were compared between treated and an
unvaccinated control group of 30 broilers. There was no statistical difference in antibody response between
broilers given vaccine via eye or drinking water. As expected, there was a
difference in antibody titers in treated from control broilers, however the vaccinations
did not produce sufficient antibody to protect broilers against Newcastle
disease.
.
Keywords: Newcastle disease (ND), Vaccination programs, Nobilis® ND Clone 30 vaccine, humoral immune response.
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