Comparative Study of the Efficiency of the Inactivated H9n2 Vaccine against Avian Influenza in Broiler Chickens

Authors

  • Assia Allaoui, Karina Bachtarzi, Lilia Belkacem, Mohamedsalah Beguiret

DOI:

https://doi.org/10.53350/pjmhs22169363

Abstract

Aim: Our work is devoted to a serological study of avian influenza disease in broiler chickens, after five different vaccine protocols.

Methods: a total of 500 broiler chicks (day-old) were equitably divided into 5 lots.  in each batch a specific vaccination protocol was followed. The relative level of serum antibodies against H9N2 virus present in the samples is determined at days: 1, 10, 24, 33, and 51 of age.

Results: for batches 1 and 2: the kinetics of the antibodies present a stable curve not associated with significant modifications (p> 0.05) during the entire experimental period, whereas for batches 3, 4 and 5: a peak is observed at D 33 for the first two batches and at D51 for the last

Conclusion: the development of active immunity conferred by vaccinations has not been proven because in groups 3, 4 and 5 the titers of antibodies reach high values ​​only in the case of response to the provoked infectious condition and not following immunization by vaccines.

Keywords: antibodies, ELISA method, immunity, serotype H9N2, vaccine.

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How to Cite

Assia Allaoui, Karina Bachtarzi, Lilia Belkacem, Mohamedsalah Beguiret. (2022). Comparative Study of the Efficiency of the Inactivated H9n2 Vaccine against Avian Influenza in Broiler Chickens. Pakistan Journal of Medical & Health Sciences, 16(09), 363. https://doi.org/10.53350/pjmhs22169363