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Journal article
Bacterial Diseases in Rainbow Trout Farms in Kurdistan and Kermanshah Provinces of Iran and Their Risk Factors
Journal of Veterinary Research, Vol.80(3), pp.161-175
2025
Abstract
BACKGROUND: Study of economically significant bacterial diseases in farmed rainbow trout is important.
OBJECTIVES: This study aimed to investigate the economically important bacterial diseases in rainbow trout farms in Kurdistan and Kermanshah provinces, Iran.
METHODS: Ten diseased fish were obtained from 25 fish farms located at Palangan, Siravan, Bijar, and Rijab farms as well as the trout farms along the Gavroud river. Isolation and identification of the causative agents were done using phenotypic and molecular methods. The presence of 23 risk factors affecting the occurrence/severity of bacterial diseases was also studied in these fish farms.
RESULTS: We obtained 59 and 51 bacterial isolates from Kurdistan and Kermanshah fish farms, respectively. In molecular studies, six bacterial species including Streptococcus iniae, S. agalactiae, S. dysgalactiae, Lactococcus garvieae, Yersinia ruckeri, and Aeromonas hydrophila were identified in the fish farms of both provinces. The most frequent bacterial pathogens in Kurdistan fish farms were L. garvieae (22%), S. agalactiae (20.3%), and Y. ruckeri (18.6%), followed by S. iniae (15.3%), A. hydrophila (8.5%), and S. dysgalactiae (6.8%), while in Kermanshah fish farms, Y. ruckeri (23.5%), L. garvieae (21.6%) and S. agalactiae (21.6%) were more prevalent, followed by S. iniae (13.7%), S. dysgalactiae (5.9%) and A. hydrophila (5.9%). Relative frequencies of unknown isolates in Kurdistan and Kermanshah fish farms were 8.5% and 7.8%, respectively. The relative frequency of 19 and 15 risk factors was 50% in Kurdistan and Kermanshah farms, respectively.
CONCLUSIONS: The rainbow trout farms in Kurdistan and Kermanshah have economically important bacterial diseases. Therefore, it is necessary to adopt methods to prevent their occurrence.
Details
- Title
- Bacterial Diseases in Rainbow Trout Farms in Kurdistan and Kermanshah Provinces of Iran and Their Risk Factors
- Publication Details
- Journal of Veterinary Research, Vol.80(3), pp.161-175
- Publisher
- University of Tehran
- Identifiers
- 991005816848007891
- Copyright
- © 2025 The Author(s).
- Murdoch Affiliation
- Harry Butler Institute
- Resource Type
- Journal article
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