Experimental Infection of IS/885/00-like Infectious Bronchitis Virus in Specific Pathogen Free and Commercial Broiler Chicks
Overview
Authors
Affiliations
Pathogenesis of an IS/885/00-like (IS/885) strain of variant infectious bronchitis virus (IBV) was examined in one day old specific pathogen free (SPF) and commercial broiler chicks. Chicks were humanely euthanized at 3, 6, 9, 12, 15, 21 and 28 days post infection (dpi) for necropsy examination, and tissues were collected for histopathology and virus detection by reverse transcription polymerase chain reaction (RT-PCR). Respiratory clinical signs and gross lesions consisting of tracheal caseous exudate and plugs, and swollen kidneys (with or without) urate deposits were observed in SPF and broiler chicks. The onset of disease developed more slowly and were of lesser severity in broiler compared to SPF chicks, reflecting the inhibitory effects of the IBV maternal-antibodies in the broiler chicks or genetic/strain susceptibility, or both. Head swelling was observed in one infected broiler chick at 15 dpi and the virus was recovered by RT-PCR and isolation. In the IS/885-infected SPF chicks, cystic oviducts were found in two female chicks. IS/885 was isolated from the cystic fluid. Using ELISA, low to moderate levels of the antibodies to IBV was detected in the SPF compared to broiler infected chicks.
Pathogenicity of GI-23 Avian Infectious Bronchitis Virus Strain Isolated in Brazil.
Trevisol I, Caron L, Mores M, Voss-Rech D, da Silva Zani G, Back A Viruses. 2023; 15(5).
PMID: 37243283 PMC: 10223456. DOI: 10.3390/v15051200.
Lisowska A, Pikula A, Opolska J, Jasik A, Kycko A, Domanska-Blicharz K Pathogens. 2021; 10(5).
PMID: 33926018 PMC: 8145137. DOI: 10.3390/pathogens10050522.
Bhuiyan M, Amin Z, Bakar A, Saallah S, Yusuf N, Md Shaarani S Vet Sci. 2021; 8(3).
PMID: 33809420 PMC: 8001924. DOI: 10.3390/vetsci8030047.
Chhabra R, Ball C, Chantrey J, Ganapathy K Dev Comp Immunol. 2018; 87:16-23.
PMID: 29751011 PMC: 7173069. DOI: 10.1016/j.dci.2018.04.026.
Elhady M, Ali A, Kilany W, Elfeil W, Ibrahim H, Nabil A Vet Sci. 2018; 5(2).
PMID: 29747397 PMC: 6024885. DOI: 10.3390/vetsci5020049.