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OJVRTM
Online Journal of Veterinary Research©
Volume 17(8):426-431, 2013.
Redacted 2017.


Immune response in broilers given combinations of live and killed Newcastle vaccine viruses.

 

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., Immune response in broilers given combinations of live and killed Newcastle vaccine viruses. Onl J Vet Res., 17(8):426-431, 2013.   Immune response determined by the hemagglutination test from 7 vaccination schedules against Newcastle disease in broilers until 42 days of age is described.  Groups of 30 chicks each were vaccinated at day 9 and/or 18 of age with B1 strain eye drops or via drinking water or by both routes. Others were given B1 eye drop with killed vaccine via subcutaneous injection and others were given B1, Lasota or Avenue strains in drinking water. One group was not revaccinated at 18 days. Controls were unvaccinated chicks. Data analysis suggested that single vaccinations with live vaccine or killed vaccine by any method, or live vaccine by eye drop with Lasota in drinking water did not provide lasting immunity. However, vaccination of B1 strain with killed vaccine injected SC provided lasting immunity until 42 days of age.

 

Keywords: Newcastle disease vaccines, Vaccination programs, humoral immune response.


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