• Home
  • Browse
    • Current Issue
    • By Issue
    • By Author
    • By Subject
    • Author Index
    • Keyword Index
  • Journal Info
    • About Journal
    • Aims and Scope
    • Editorial Board
    • Publication Ethics
    • Peer Review Process
  • Guide for Authors
  • Submit Manuscript
  • Contact Us
 
  • Login
  • Register
Home Articles List Article Information
  • Save Records
  • |
  • Printable Version
  • |
  • Recommend
  • |
  • How to cite Export to
    RIS EndNote BibTeX APA MLA Harvard Vancouver
  • |
  • Share Share
    CiteULike Mendeley Facebook Google LinkedIn Twitter
Suez Canal Veterinary Medical Journal. SCVMJ
arrow Articles in Press
arrow Current Issue
Journal Archive
Volume Volume 30 (2025)
Volume Volume 29 (2024)
Volume Volume 28 (2023)
Issue Issue 2
Issue Issue 1
Volume Volume 27 (2022)
Volume Volume 26 (2021)
Volume Volume 25 (2020)
Volume Volume 24 (2019)
Volume Volume 23 (2018)
Volume Volume 22 (2017)
Volume Volume 21 (2016)
Volume Volume 20 (2015)
Volume Volume 19 (2014)
Volume Volume 18 (2013)
Awad, E., Arafa, A., Mandour, M., Elshahidy, M. (2023). Molecular Characterization and Pathotyping of Avian Infectious Bronchitis Virus in some Egyptian provinces. Suez Canal Veterinary Medical Journal. SCVMJ, 28(2), 333-352. doi: 10.21608/scvmj.2023.315058
Elsayed M. Awad; Abdelsatar A. Arafa; Mohamed F. Mandour; Mohamed S. Elshahidy. "Molecular Characterization and Pathotyping of Avian Infectious Bronchitis Virus in some Egyptian provinces". Suez Canal Veterinary Medical Journal. SCVMJ, 28, 2, 2023, 333-352. doi: 10.21608/scvmj.2023.315058
Awad, E., Arafa, A., Mandour, M., Elshahidy, M. (2023). 'Molecular Characterization and Pathotyping of Avian Infectious Bronchitis Virus in some Egyptian provinces', Suez Canal Veterinary Medical Journal. SCVMJ, 28(2), pp. 333-352. doi: 10.21608/scvmj.2023.315058
Awad, E., Arafa, A., Mandour, M., Elshahidy, M. Molecular Characterization and Pathotyping of Avian Infectious Bronchitis Virus in some Egyptian provinces. Suez Canal Veterinary Medical Journal. SCVMJ, 2023; 28(2): 333-352. doi: 10.21608/scvmj.2023.315058

Molecular Characterization and Pathotyping of Avian Infectious Bronchitis Virus in some Egyptian provinces

Article 7, Volume 28, Issue 2, December 2023, Page 333-352  XML PDF (2.62 MB)
Document Type: Original Article
DOI: 10.21608/scvmj.2023.315058
View on SCiNiTO View on SCiNiTO
Authors
Elsayed M. Awad* 1; Abdelsatar A. Arafa2; Mohamed F. Mandour3; Mohamed S. Elshahidy3
1Animal health research institute, Damietta branch, Agriculture Research Center, Damietta, Egypt
2Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal health research institute, Agriculture Research Center, Dokki, Giza, Egypt
3Faculty of Veterinary Medicine Suez Canal University, Ismailia, Egypt
Abstract
The infectious bronchitis virus has been identified as a highly contagious disease in chickens. The molecular characterization and pathological lesions linked to IBV infection[SA1]  in naturally infected flocks from 7 Egyptian provinces from 2019 to 2022 were investigated in this study using the tissue samples from 18 broiler chicken flocks suspected of having respiratory disease. The reported isolates were detected by a real-time reverse transcriptase assay that targeted the s1 gene (HVR1-2), and they were characterized further by (S1) gene sequencing with histopathological examination of kidney and tracheal tissue. Phylogenetically, the S1 gene was clustered into two major groups, The first group had only one virus belonging to the classical vaccine strain of GI-1 lineage, it had a specific character of 32 Amino Acids (AA) mutations compared to EU780077-IS/1494/2006 reference strain and the second group contains 9 viruses belong to genotype GI-23 (variant II). They were further separated into two subgroups, The first subgroup GI-23.2.1, contains 8 viruses with 7-14 Amino Acids (AA) mutations, second subgroup contains one virus belonging to genotype GI-23.2.2 which has 18 AA mutations, compared to EU780077-IS/1494/2006 reference strain, specifically in HVRs regions (HVRI, II). The histopathological examination revealed degenerative changes and loss of cilia of the tracheal epithelium. The kidneys had necrosis with heterophil infiltrations, congestion, and tubular degeneration. In conclusion, the current study investigates the Characterization and Pathotyping[DDM2] of the infectious bronchitis virus in some Egyptian flocks. It is critical to ongoing monitoring to stop the spread of infections, as well as the creation and use of vaccines based on local viruses.



 [SA1]




 [DDM2]Not including in the aim of the work
Main Subjects
Internal Medicine
Statistics
Article View: 168
PDF Download: 210
Home | Glossary | News | Aims and Scope | Sitemap
Top Top

Journal Management System. Designed by NotionWave.