Humoral, cellular immunity and efficacy of bioreactor propagated and inactivated Fowl adenovirus 8b adjuvanted with Montanide 71VG in broiler chickens.

Authors

  • Chidozie C Ugwu Faculty of Veterinary Medicine, Universiti Putra Malaysia, Kuala Lumpur, Malaysia; Department of Animal Science and Technology, Federal University of Technology, Owerri, Nigeria. https://orcid.org/0000-0003-0039-8648
  • Mohd Hair-Bejo Faculty of Veterinary Medicine, Universiti Putra Malaysia, Kuala Lumpur, Malaysia; Institute of Bioscience, Universiti Putra Malaysia, Kuala Lumpur, Malaysia. https://orcid.org/0000-0003-0039-8648
  • Mat I Nurulfiza Institute of Bioscience, Universiti Putra Malaysia, Kuala Lumpur, Malaysia; Faculty of Biotechnology and Biomolecular Sciences, University Putra Malaysia, Kuala Lumpur, Malaysia. https://orcid.org/0000-0003-0039-8648
  • Abdul R Omar Faculty of Veterinary Medicine, Universiti Putra Malaysia, Kuala Lumpur, Malaysia; Institute of Bioscience, Universiti Putra Malaysia, Kuala Lumpur, Malaysia. https://orcid.org/0000-0003-0039-8648
  • Aini Ideris Faculty of Veterinary Medicine, Universiti Putra Malaysia, Kuala Lumpur, Malaysia; Institute of Bioscience, Universiti Putra Malaysia, Kuala Lumpur, Malaysia. https://orcid.org/0000-0003-0039-8648

Keywords:

Fowl adenovirus; BEI; Montanide 71VG; Antibodies; T lymphocytes; Efficacy.

Abstract

Objectives: The study aimed to inactivate the FAdV isolate (UPM11142P5B1) produced in a bioreactor and assess the humoral and cellular immunity, efficacy, and virus shedding in broiler chickens. Materials and Methods: The isolate was grown in a bioreactor, inactivated using binary ethyleneimine, adjuvanted with Montanide 71VG, and injected into day-old broiler chickens either with or without booster groups. The following parameters were measured: T lymphocyte profile in the liver, spleen, and thymus; FAdV antibody titer; clinical symptoms; gross and histological alterations in the liver, spleen, and thymus; virus copy number in the liver and cloacal shedding. Results: Compared to the unchallenged control group, booster (BG), and non-booster (NBG), the challenged control group (CCG) had a larger liver: body weight (BW) ratio, milder clinical signs, gross lesions, and histological alterations. They also had a lower BW. At 7, 21, 35, and 42 days post-inoculation (dpi), the NBG and BG exhibited higher antibody levels than the UCG. At 35 dpi, challenged BG and NBG produced more antibodies than CCG. In BG and NBG, T cells were stimulated in the spleen, thymus, and liver. At 35 and 42 dpi, the challenged BG and NBG showed significantly decreased viral copy numbers in the liver and shedding, respectively, along with increased lymphocyte counts. Conclusion: The inactivated UPM11142P5B1 with Montanide 71VG could be a vaccine against FAdV 8b infections in chickens.

J. Adv. Vet. Anim. Res., 11(3): 693–702, September 2024

http://doi.org/10.5455/javar.2024.k819

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Published

2024-09-29

How to Cite

Ugwu, C. C., Hair-Bejo, M., Nurulfiza, M. I., Omar, A. R., & Ideris, A. (2024). Humoral, cellular immunity and efficacy of bioreactor propagated and inactivated Fowl adenovirus 8b adjuvanted with Montanide 71VG in broiler chickens. Journal of Advanced Veterinary and Animal Research, 11(3), 693–702. Retrieved from https://banglajol.info/index.php/JAVAR/article/view/81033

Issue

Vol. 11 No. 3 (2024)

Section

Original Articles

License

Copyright (c) 2024 Chidozie C Ugwu, Mohd Hair-Bejo, Mat I Nurulfiza, Abdul R Omar, Aini Ideris

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