Evaluation of histological post‐mortem changes in farmed Atlantic salmon (Salmo salar L.) at different time intervals and storage temperatures
The aim of this study was to evaluate histologic post‐mortem autolytic changes in farmed Atlantic salmon. The fish were either stored at room temperature (RT, 21°C), refrigerated (4°C) or frozen (−20°C), while fish necropsy was performed at 0, 1, 4, 24 and 48 h post‐storage (hps). In addition, gills...
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| Veröffentlicht in: | Journal of fish diseases 2022-10, Vol.45 (10), p.1571-1580 |
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| creator | Furnesvik, Lisa Erkinharju, Toni Hansen, Miroslava Yousaf, Muhammad Naveed Seternes, Tore |
| description | The aim of this study was to evaluate histologic post‐mortem autolytic changes in farmed Atlantic salmon. The fish were either stored at room temperature (RT, 21°C), refrigerated (4°C) or frozen (−20°C), while fish necropsy was performed at 0, 1, 4, 24 and 48 h post‐storage (hps). In addition, gills were sampled at 0, 5, 10, 15, 30 and 45 min post‐storage (mps) at room temperature (RT). The haematoxylin and eosin‐stained tissue slides were evaluated and scored by using a semi‐quantitative scoring system. Our findings demonstrated gills and pyloric caeca/pancreas as the most severely autolysed organs while heart and skeletal musculature were least affected. Generally, moderate to severe autolysis appeared first at 4 hps, while severe changes were seen at 24 hps. Gills demonstrated autolytic changes as early as 10 mps and pyloric caeca/pancreas at 1 hps. Freezing did not prevent the autolysis and even contributed to freezing artefacts, which may lead to misdiagnosis. Keeping organs refrigerated slowed the autolytic progress within the first 4 hps marginally. This study recommends gills and pyloric caeca/pancreas should be sampled as early as possible, at least within 10 min post‐necropsy. |
| doi_str_mv | 10.1111/jfd.13681 |
| format | Article |
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The fish were either stored at room temperature (RT, 21°C), refrigerated (4°C) or frozen (−20°C), while fish necropsy was performed at 0, 1, 4, 24 and 48 h post‐storage (hps). In addition, gills were sampled at 0, 5, 10, 15, 30 and 45 min post‐storage (mps) at room temperature (RT). The haematoxylin and eosin‐stained tissue slides were evaluated and scored by using a semi‐quantitative scoring system. Our findings demonstrated gills and pyloric caeca/pancreas as the most severely autolysed organs while heart and skeletal musculature were least affected. Generally, moderate to severe autolysis appeared first at 4 hps, while severe changes were seen at 24 hps. Gills demonstrated autolytic changes as early as 10 mps and pyloric caeca/pancreas at 1 hps. Freezing did not prevent the autolysis and even contributed to freezing artefacts, which may lead to misdiagnosis. Keeping organs refrigerated slowed the autolytic progress within the first 4 hps marginally. This study recommends gills and pyloric caeca/pancreas should be sampled as early as possible, at least within 10 min post‐necropsy.</description><identifier>ISSN: 0140-7775</identifier><identifier>ISSN: 1365-2761</identifier><identifier>EISSN: 1365-2761</identifier><identifier>DOI: 10.1111/jfd.13681</identifier><language>eng</language><publisher>Oxford: Blackwell Publishing Ltd</publisher><subject>Atlantic salmon ; Autolysis ; Body organs ; Fish ; Freezing ; Gills ; Heart ; histology ; Marine fishes ; Necropsy ; Organs ; Pancreas ; Pyloric caeca ; Room temperature ; Salmon ; Storage ; Temperature ; time</subject><ispartof>Journal of fish diseases, 2022-10, Vol.45 (10), p.1571-1580</ispartof><rights>2022 The Authors. published by John Wiley & Sons Ltd.</rights><rights>2022. This article is published under http://creativecommons.org/licenses/by-nc/4.0/ (the “License”). 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The fish were either stored at room temperature (RT, 21°C), refrigerated (4°C) or frozen (−20°C), while fish necropsy was performed at 0, 1, 4, 24 and 48 h post‐storage (hps). In addition, gills were sampled at 0, 5, 10, 15, 30 and 45 min post‐storage (mps) at room temperature (RT). The haematoxylin and eosin‐stained tissue slides were evaluated and scored by using a semi‐quantitative scoring system. Our findings demonstrated gills and pyloric caeca/pancreas as the most severely autolysed organs while heart and skeletal musculature were least affected. Generally, moderate to severe autolysis appeared first at 4 hps, while severe changes were seen at 24 hps. Gills demonstrated autolytic changes as early as 10 mps and pyloric caeca/pancreas at 1 hps. Freezing did not prevent the autolysis and even contributed to freezing artefacts, which may lead to misdiagnosis. Keeping organs refrigerated slowed the autolytic progress within the first 4 hps marginally. This study recommends gills and pyloric caeca/pancreas should be sampled as early as possible, at least within 10 min post‐necropsy.</description><subject>Atlantic salmon</subject><subject>Autolysis</subject><subject>Body organs</subject><subject>Fish</subject><subject>Freezing</subject><subject>Gills</subject><subject>Heart</subject><subject>histology</subject><subject>Marine fishes</subject><subject>Necropsy</subject><subject>Organs</subject><subject>Pancreas</subject><subject>Pyloric caeca</subject><subject>Room temperature</subject><subject>Salmon</subject><subject>Storage</subject><subject>Temperature</subject><subject>time</subject><issn>0140-7775</issn><issn>1365-2761</issn><issn>1365-2761</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><sourceid>WIN</sourceid><sourceid>3HK</sourceid><recordid>eNp1kc9q3DAQxkVJoZu0hz5BBL0kB28k25KcY0jzryz00PYsZHm00WJLW0luya2PkGfMk2Q221wKFYhB6DffN8NHyEfOlhzP2cYNS97Ijr8hC6yiqpXkB2TBeMsqpZR4Rw5z3jDGleByQR6vfplxNsXHQKOj9z6XOMa1t2ak25jL05_HKaYCE7X3JqwhUx-oM2mCgV6U0YTiLc1mnLD_5Nuu7l4m0dXylJpCB-8cJAiFFj8BNhdI6JipCQNFr2TWQFF-C8mUOUF-T946_IcPf-sR-XF99f3ytlp9vbm7vFhVtunOecWtcOB6JsBJx5W0vbAD3r61dWuU7U3f1bJvhJPnzvWtEp0UVik2sAa46ZsjcrzXtQl39kEHnEVzxhqla1VzhsTJntim-HOGXPTks4URl4Y4Z13Lrq4la1WD6Kd_0E2cU8D5UYs3neiY2gmevlrGnBM4vU1-MukBbfUuPY3p6Zf0kD3bs7_9CA__B_WX68_7jmee_p2w</recordid><startdate>202210</startdate><enddate>202210</enddate><creator>Furnesvik, Lisa</creator><creator>Erkinharju, Toni</creator><creator>Hansen, Miroslava</creator><creator>Yousaf, Muhammad Naveed</creator><creator>Seternes, Tore</creator><general>Blackwell Publishing Ltd</general><general>Wiley</general><scope>24P</scope><scope>WIN</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7TN</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H94</scope><scope>H95</scope><scope>H98</scope><scope>H99</scope><scope>L.F</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>7X8</scope><scope>3HK</scope><orcidid>https://orcid.org/0000-0001-5010-5095</orcidid></search><sort><creationdate>202210</creationdate><title>Evaluation of histological post‐mortem changes in farmed Atlantic salmon (Salmo salar L.) at different time intervals and storage temperatures</title><author>Furnesvik, Lisa ; 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| source | NORA - Norwegian Open Research Archives; Wiley Online Library Journals |
| subjects | Atlantic salmon Autolysis Body organs Fish Freezing Gills Heart histology Marine fishes Necropsy Organs Pancreas Pyloric caeca Room temperature Salmon Storage Temperature time |
| title | Evaluation of histological post‐mortem changes in farmed Atlantic salmon (Salmo salar L.) at different time intervals and storage temperatures |
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