Mortality related to pancreas disease in Norwegian farmed salmonid fish, Salmo salar L. and Oncorhynchus mykiss ( Walbaum)
Abstract High mortality during the salmonid seawater phase is a continuous problem for the salmonid aquaculture industry, although the mortality levels show a large variation both in farms with a disease history and those without. We wanted to examine the mortality patterns in farms with pancreas di...
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crwiley:10.1111/jfd.12060 2024-09-15T18:33:03+00:00 Mortality related to pancreas disease in Norwegian farmed salmonid fish, Salmo salar L. and Oncorhynchus mykiss ( Walbaum) Stormoen, M Kristoffersen, A B Jansen, P A 2013 http://dx.doi.org/10.1111/jfd.12060 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfd.12060 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12060 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Diseases volume 36, issue 7, page 639-645 ISSN 0140-7775 1365-2761 journal-article 2013 crwiley https://doi.org/10.1111/jfd.12060 2024-07-11T04:35:33Z Abstract High mortality during the salmonid seawater phase is a continuous problem for the salmonid aquaculture industry, although the mortality levels show a large variation both in farms with a disease history and those without. We wanted to examine the mortality patterns in farms with pancreas disease ( PD ) and compare it to farms without this diagnosis. Further, we wished to investigate the factors influencing the maximum mortality in both groups. We examined data from all salmonid farms in N orway stocked after J anuary 2003 and slaughtered before D ecember 2007. In total, 1884 cohorts were included, and 150 of these were diagnosed with PD . We found that season accounted for more of the variation in mortality than water temperature in PD ‐positive cohorts and that infection pressure influenced the mortality in non‐ PD cohorts, suggesting outbreaks of disease that are not diagnosed. We also found that the mortality in PD cohorts decreased significantly from 2003 to 2007, suggesting that increased knowledge about PD and targeted actions have been effective. Our study further suggests that crude mortality figures may be of limited use when wanting to examine a particular disease and risk factors for increased mortality. We suggest farmers and legislation should turn to a more modern approach with cause‐specific mortality records. Article in Journal/Newspaper Salmo salar Wiley Online Library Journal of Fish Diseases 36 7 639 645 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract High mortality during the salmonid seawater phase is a continuous problem for the salmonid aquaculture industry, although the mortality levels show a large variation both in farms with a disease history and those without. We wanted to examine the mortality patterns in farms with pancreas disease ( PD ) and compare it to farms without this diagnosis. Further, we wished to investigate the factors influencing the maximum mortality in both groups. We examined data from all salmonid farms in N orway stocked after J anuary 2003 and slaughtered before D ecember 2007. In total, 1884 cohorts were included, and 150 of these were diagnosed with PD . We found that season accounted for more of the variation in mortality than water temperature in PD ‐positive cohorts and that infection pressure influenced the mortality in non‐ PD cohorts, suggesting outbreaks of disease that are not diagnosed. We also found that the mortality in PD cohorts decreased significantly from 2003 to 2007, suggesting that increased knowledge about PD and targeted actions have been effective. Our study further suggests that crude mortality figures may be of limited use when wanting to examine a particular disease and risk factors for increased mortality. We suggest farmers and legislation should turn to a more modern approach with cause‐specific mortality records. |
format |
Article in Journal/Newspaper |
author |
Stormoen, M Kristoffersen, A B Jansen, P A |
spellingShingle |
Stormoen, M Kristoffersen, A B Jansen, P A Mortality related to pancreas disease in Norwegian farmed salmonid fish, Salmo salar L. and Oncorhynchus mykiss ( Walbaum) |
author_facet |
Stormoen, M Kristoffersen, A B Jansen, P A |
author_sort |
Stormoen, M |
title |
Mortality related to pancreas disease in Norwegian farmed salmonid fish, Salmo salar L. and Oncorhynchus mykiss ( Walbaum) |
title_short |
Mortality related to pancreas disease in Norwegian farmed salmonid fish, Salmo salar L. and Oncorhynchus mykiss ( Walbaum) |
title_full |
Mortality related to pancreas disease in Norwegian farmed salmonid fish, Salmo salar L. and Oncorhynchus mykiss ( Walbaum) |
title_fullStr |
Mortality related to pancreas disease in Norwegian farmed salmonid fish, Salmo salar L. and Oncorhynchus mykiss ( Walbaum) |
title_full_unstemmed |
Mortality related to pancreas disease in Norwegian farmed salmonid fish, Salmo salar L. and Oncorhynchus mykiss ( Walbaum) |
title_sort |
mortality related to pancreas disease in norwegian farmed salmonid fish, salmo salar l. and oncorhynchus mykiss ( walbaum) |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1111/jfd.12060 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfd.12060 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12060 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_source |
Journal of Fish Diseases volume 36, issue 7, page 639-645 ISSN 0140-7775 1365-2761 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfd.12060 |
container_title |
Journal of Fish Diseases |
container_volume |
36 |
container_issue |
7 |
container_start_page |
639 |
op_container_end_page |
645 |
_version_ |
1810474809999491072 |