Christopher Naas, Heike Schmidt-Posthaus, Ramona Lüthi, Alexander Kappe
{"title":"过氧乙酸和UV-C辐照在虹鳟鱼养殖中的连续应用——一个商业流通鱼场多焦点病原体事件的案例研究","authors":"Christopher Naas, Heike Schmidt-Posthaus, Ramona Lüthi, Alexander Kappe","doi":"10.1007/s10499-025-01980-3","DOIUrl":null,"url":null,"abstract":"<div><p>In order to investigate the effects on fish production and health in a commercial aquaculture facility, rainbow trout (<i>Oncorhynchus mykiss</i>) with an initial average body weight of 41 g were reared in raceway-channels under a continuous application of either peracetic acid (0.2 mg PAA L<sup>−1</sup>) or ultraviolet C light (UV-C, 316.7–155.8 mWs cm<sup>−2</sup>) to the inflowing water for a total of 183 days. Compared to the control, all performance metrics recorded in the fish from the PAA and UV-C treatment groups were significantly increased at the end of the production. To account for the multi-pathogen exposure in the fish farm, regular fish health examinations were conducted. Pathogens detected were the infectious pancreatic necrosis virus (IPNV), <i>Flavobacterium psychrophilum</i>, <i>Aeromonas salmonicida</i>, and <i>Tetracapsuloides bryosalmonae</i>, the causative agent of proliferative kidney disease (PKD). Furthermore, rainbow trout displayed symptoms of puffy skin disease (PSD). From the perspective of PSD, the PAA protocol reduced the prevalence and severity of the disease. At the end of the production cycle, 90% of fish from the PAA treatment remained marketable. Thus, PAA can be considered a promising tool to protect rainbow trout from PSD in the future. In contrast, UV-C light did not soothe or prevent PSD outbreaks. However, the UV-C treatment delayed the development of PKD symptoms in the corresponding group by around 1 month. The application of the treatment methods investigated resulted in increased production costs. Overall, the continuous application of the pathogen reduction methods proved to be positive for fish health and by this for aquaculture.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 5","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The continuous application of peracetic acid and UV-C irradiation in rainbow trout aquaculture—a case study under a multifocal pathogen event in a commercial flow-through fish farm\",\"authors\":\"Christopher Naas, Heike Schmidt-Posthaus, Ramona Lüthi, Alexander Kappe\",\"doi\":\"10.1007/s10499-025-01980-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In order to investigate the effects on fish production and health in a commercial aquaculture facility, rainbow trout (<i>Oncorhynchus mykiss</i>) with an initial average body weight of 41 g were reared in raceway-channels under a continuous application of either peracetic acid (0.2 mg PAA L<sup>−1</sup>) or ultraviolet C light (UV-C, 316.7–155.8 mWs cm<sup>−2</sup>) to the inflowing water for a total of 183 days. Compared to the control, all performance metrics recorded in the fish from the PAA and UV-C treatment groups were significantly increased at the end of the production. To account for the multi-pathogen exposure in the fish farm, regular fish health examinations were conducted. Pathogens detected were the infectious pancreatic necrosis virus (IPNV), <i>Flavobacterium psychrophilum</i>, <i>Aeromonas salmonicida</i>, and <i>Tetracapsuloides bryosalmonae</i>, the causative agent of proliferative kidney disease (PKD). Furthermore, rainbow trout displayed symptoms of puffy skin disease (PSD). From the perspective of PSD, the PAA protocol reduced the prevalence and severity of the disease. At the end of the production cycle, 90% of fish from the PAA treatment remained marketable. Thus, PAA can be considered a promising tool to protect rainbow trout from PSD in the future. In contrast, UV-C light did not soothe or prevent PSD outbreaks. However, the UV-C treatment delayed the development of PKD symptoms in the corresponding group by around 1 month. The application of the treatment methods investigated resulted in increased production costs. 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The continuous application of peracetic acid and UV-C irradiation in rainbow trout aquaculture—a case study under a multifocal pathogen event in a commercial flow-through fish farm
In order to investigate the effects on fish production and health in a commercial aquaculture facility, rainbow trout (Oncorhynchus mykiss) with an initial average body weight of 41 g were reared in raceway-channels under a continuous application of either peracetic acid (0.2 mg PAA L−1) or ultraviolet C light (UV-C, 316.7–155.8 mWs cm−2) to the inflowing water for a total of 183 days. Compared to the control, all performance metrics recorded in the fish from the PAA and UV-C treatment groups were significantly increased at the end of the production. To account for the multi-pathogen exposure in the fish farm, regular fish health examinations were conducted. Pathogens detected were the infectious pancreatic necrosis virus (IPNV), Flavobacterium psychrophilum, Aeromonas salmonicida, and Tetracapsuloides bryosalmonae, the causative agent of proliferative kidney disease (PKD). Furthermore, rainbow trout displayed symptoms of puffy skin disease (PSD). From the perspective of PSD, the PAA protocol reduced the prevalence and severity of the disease. At the end of the production cycle, 90% of fish from the PAA treatment remained marketable. Thus, PAA can be considered a promising tool to protect rainbow trout from PSD in the future. In contrast, UV-C light did not soothe or prevent PSD outbreaks. However, the UV-C treatment delayed the development of PKD symptoms in the corresponding group by around 1 month. The application of the treatment methods investigated resulted in increased production costs. Overall, the continuous application of the pathogen reduction methods proved to be positive for fish health and by this for aquaculture.
期刊介绍:
Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture.
The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more.
This is the official Journal of the European Aquaculture Society.