Key result
Priming with Mass type live vaccine and boosting with bivalent killed vaccine stimulated high antibody levels against M41 and D207 serotypes and protected egg production in laying hens.
Why the study?
Does a bivalent infectious bronchitis killed virus vaccine improve antibody responses and protect egg production in chickens?
Population
Chickens and laying hens (challenged at 30 weeks of age)
Comparison
Primary vaccinations to different strains of… vs Mass type vaccines only
Design
Preclinical
Follow-up
Up to 30 weeks of age
Authors
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May guide IBV vaccination in laying hens; hypothesis-generating pending field confirmation.
Does a bivalent infectious bronchitis killed virus vaccine improve antibody responses and protect egg production in chickens?
A bivalent killed virus vaccine following live virus priming stimulates high antibody levels and protects egg production against variant strains of infectious bronchitis virus in chickens.
Finney et al. (1990) studied Infectious bronchitis. Bivalent infectious bronchitis killed virus vaccine vs. Mass type vaccines only was evaluated on Haemagglutination inhibition and virus neutralisation antibody responses. Priming with Mass type live vaccine and boosting with bivalent killed vaccine stimulated high antibody levels against M41 and D207 serotypes and protected egg production in laying hens.
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