IMMUNE RESPONSE OF CHICKS TO INFECTIOUS BURSAL DISEASE VIRUS BOOSTER VACCINATION.

P. C.  Animoke; M. C. O.  Ezeibe; J.  I.  Eze; A. A.  Ngene; O. N.  Okoroafor; P. E.  Aba

doi:10.51791/njap.vi.6950

Authors

P. C. Animoke University of Nigeria, Nsukka.
M. C. O. Ezeibe University of Nigeria, Nsukka.
J. I. Eze University of Nigeria, Nsukka.
A. A. Ngene University of Nigeria, Nsukka.
O. N. Okoroafor University of Nigeria, Nsukka.
P. E. Aba University of Nigeria, Nsukka.

DOI:

https://doi.org/10.51791/njap.vi.6950

Keywords:

Chicken, Agar Gel Precipitation, Antibody levels, IBD, Booster vaccination

Abstract

Study involving the rate at which chicks respond to repeat vaccination with Infectious Bursal Disease (IBD) vaccine was investigated. Eight groups of chicks aged 10 days were given first dose of IBD vaccination. Three weeks post first vaccination (PV), the vaccination was repeated in four groups while the remaining 4 groups served as controls. Starting from three weeks after the repeat vaccination, sera were collected from a pair of the groups every week for analysis using Qauntitative Agar Gel Precipitation Test (QAGPT) to assess antibody levels. Antibody titre rose to peak 3 weeks post repeat vaccination in the boosted groups. Also, mean antibody titre was higher and lasted longer in the groups boosted than in the groups with single vaccination (P < 0.05).