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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.

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Keywords: Newcastle disease (ND), Vaccination programs, Nobilis® ND Clone 30 vaccine, humoral immune response.

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