Prevalence and Molecular Detection of Ornithobacterium rhinotracheale in Poultry Flocks with Respiratory Syndrome in Hamadan Province

Background: Ornithobacterium rhinotracheale (ORT) is a significant bacterial agent contributing to respiratory diseases in various avian species. It is associated with reduced growth, increased mortality, and decreased egg production. This study aimed to determine the prevalence and molecular detection of ORT in poultry flocks exhibiting respiratory symptoms in Hamadan province. Methods: Samples were collected from poultry flocks with respiratory syndrome across Hamadan province. Tracheal swabs were taken from each flock, and relevant data were recorded. PCR was used to detect ORT in the collected samples. Results: Out of ۲۷۹ specimens tested, ۵۳.۷۶% were positive for ORT, and ۷۴.۲۰% of flocks showed contamination. Co-infections were observed in ۶۶% of cases with bronchitis, ۱۸% with bronchitis and influenza, ۱۰% with Newcastle disease, and ۶% with Newcastle disease and bronchitis. These findings indicate a high prevalence of ORT and associated infections in Hamadan poultry flocks. Conclusion: The high rate of ORT infection and its association with other respiratory diseases highlight the need for comprehensive diagnostic approaches. Multiple infections should be considered when evaluating respiratory syndromes in poultry.

کلیدواژه ها:

Ornithobacterium rhinotracheale ، respiratory syndrome ، molecular diagnosis ، co-infection ، poultry