…
comment: The repository administrator has not yet configured an RDF license.
primary topic: Seroprevalence of Ornithobacterium rhinothracheale Infection in Commercial Layers in Tunisia

Seroprevalence of Ornithobacterium rhinothracheale Infection in Commercial Layers in Tunisia
type: AcademicArticle
type: Article
abstract: Ornithobacterium rhinotracheale (ORT) infection is a worldwide disease in commercial poultry production. It is caused by a gram-negative bacterium, inducing respiratory and articular infections. The present study investigated the seroprevalence of ORT in commercial laying chicken farms in the Sfax region of South-eastern Tunisia. Diagnosis of ORT is based on the clinical signs such as respiratory distress, sneezing, cough, and limping, gross pathology in post-mortem examination (fibrinous tracheitis, fibrinous pneumonia, caseous arthritis, and tendinitis), and laboratory investigations, including isolation and identification, molecular and serological analysis. In the current study, 470 serum samples were collected from 25 commercial layer flocks (18 to 20 blood samples/flock) and tested using an indirect enzyme-linked immunosorbent assay (ELISA), which revealed that all 25 flocks (100%) demonstrated evidence of past or recent ORT infection. Seropositivity of the tested sera indicated the presence of antibodies against ORT, ranging widely from 7.69% to 100% within individual layer hens flocks. The average antibody levels varied considerably among flocks, from 1425.67 to 15233 in different flocks. The current findings indicated widespread ORT exposure in commercial layer farms in the Sfax region of South-eastern Tunisia, signifying the potential for horizontal transmission of ORT, particularly in multi-age layer integrations where older flocks can act as a source of infection for younger pullets.
date: 2025-09-30
volume: 15
issue: 3
is part of: World’s Veterinary Journal
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository
has document: Seroprevalence of Ornithobacterium rhinothracheale Infection in Commercial Layers in Tunisia (Text)
has version: Seroprevalence of Ornithobacterium rhinothracheale Infection in Commercial Layers in Tunisia (Text)
has published: Seroprevalence of Ornithobacterium rhinothracheale Infection in Commercial Layers in Tunisia (Text)
subject: SF Animal culture

Seroprevalence of Ornithobacterium rhinothracheale Infection in Commercial Layers in Tunisia (Text)
type: Document
has file: WVJ15(3)558-565,2025 (1).pdf
has part: WVJ15(3)558-565,2025 (1).pdf

Scienceline Publication
type: Organization

World’s Veterinary Journal
type: Collection
issn: 23224568

Khaled Kaboudi
type: Person
given name: Khaled
family name: Kaboudi

Imen Hamadi
type: Person
given name: Imen
family name: Hamadi

Atef Walha
type: Person
given name: Atef
family name: Walha

HTML Summary of #1575 <epc:when xmlns:epc="http://eprints.org/ep3/control" test="title">Seroprevalence of Ornithobacterium rhinothracheale Infection in Commercial Layers in Tunisia</epc:when>
format: text/html
primary topic: Seroprevalence of Ornithobacterium rhinothracheale Infection in Commercial Layers in Tunisia

SF Animal culture
type: Concept