Physiological changes observed in farmed Atlantic salmon (Salmo salar L.) with nephrocalcinosis
There is a growing concern for fish health and welfare in the salmon industry in Norway. Nephrocalcinosis, described as mineral deposits within the kidney, is increasingly observed. However, little is known about its frequency and severity in Norway. In this study 810 Atlantic salmon were sampled fr...
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2022
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/3048752 2023-05-15T15:30:36+02:00 Physiological changes observed in farmed Atlantic salmon (Salmo salar L.) with nephrocalcinosis Klykken, Christine Reed, A.K. Dalum, Alf Seljenes Olsen, Rolf Erik Moe, Morten Kaare Attramadal, Kari Boissonnot, Lauris Jeannine Ernestine 2022 application/pdf https://hdl.handle.net/11250/3048752 https://doi.org/10.1016/j.aquaculture.2022.738104 eng eng Elsevier Science Fiskeri- og havbruksnæringens forskningsfinansiering: 901587 Norges forskningsråd: 237856 Norges forskningsråd: 304498 Aquaculture. 2022, 554 1-10. urn:issn:0044-8486 https://hdl.handle.net/11250/3048752 https://doi.org/10.1016/j.aquaculture.2022.738104 cristin:2017206 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 1-10 554 Aquaculture Peer reviewed Journal article 2022 ftntnutrondheimi https://doi.org/10.1016/j.aquaculture.2022.738104 2023-02-08T23:43:36Z There is a growing concern for fish health and welfare in the salmon industry in Norway. Nephrocalcinosis, described as mineral deposits within the kidney, is increasingly observed. However, little is known about its frequency and severity in Norway. In this study 810 Atlantic salmon were sampled from 14 different fish groups in nurseries in Mid-Norway and receiving sea farm. Kidneys were examined for nephrocalcinosis by histopathological methods and all fish groups were diagnosed with nephrocalcinosis. The prevalence and severity of the disorder varied extensively between facilities. Most of the fish (68%) had mild forms of nephrocalcinosis, exhibiting at most, negligible tissue damage while fish affected by severe forms of nephrocalcinosis had an almost complete loss of kidney structure. Regardless of the severity of nephrocalcinosis, mineral deposits were mainly found in the form of amorphous cabonate apatite (amCAP), a calcium-dominated mineral. Accordingly, a majority of fish affected by nephrocalcinosis were diagnosed with hypercalcemia. Fish affected by moderate and severe forms of nephrocalcinosis also exhibited high levels of plasma magnesium, glucose, and aspartate aminotransferase (AST). These imbalances in plasma chemistry are likely to be an indication of disturbed osmoregulation and increased stress levels. The results of this study therefore suggest that nephrocalcinosis is a common and serious welfare challenge in Atlantic salmon that needs better monitoring. publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar NTNU Open Archive (Norwegian University of Science and Technology) Norway Aquaculture 554 738104 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
There is a growing concern for fish health and welfare in the salmon industry in Norway. Nephrocalcinosis, described as mineral deposits within the kidney, is increasingly observed. However, little is known about its frequency and severity in Norway. In this study 810 Atlantic salmon were sampled from 14 different fish groups in nurseries in Mid-Norway and receiving sea farm. Kidneys were examined for nephrocalcinosis by histopathological methods and all fish groups were diagnosed with nephrocalcinosis. The prevalence and severity of the disorder varied extensively between facilities. Most of the fish (68%) had mild forms of nephrocalcinosis, exhibiting at most, negligible tissue damage while fish affected by severe forms of nephrocalcinosis had an almost complete loss of kidney structure. Regardless of the severity of nephrocalcinosis, mineral deposits were mainly found in the form of amorphous cabonate apatite (amCAP), a calcium-dominated mineral. Accordingly, a majority of fish affected by nephrocalcinosis were diagnosed with hypercalcemia. Fish affected by moderate and severe forms of nephrocalcinosis also exhibited high levels of plasma magnesium, glucose, and aspartate aminotransferase (AST). These imbalances in plasma chemistry are likely to be an indication of disturbed osmoregulation and increased stress levels. The results of this study therefore suggest that nephrocalcinosis is a common and serious welfare challenge in Atlantic salmon that needs better monitoring. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Klykken, Christine Reed, A.K. Dalum, Alf Seljenes Olsen, Rolf Erik Moe, Morten Kaare Attramadal, Kari Boissonnot, Lauris Jeannine Ernestine |
spellingShingle |
Klykken, Christine Reed, A.K. Dalum, Alf Seljenes Olsen, Rolf Erik Moe, Morten Kaare Attramadal, Kari Boissonnot, Lauris Jeannine Ernestine Physiological changes observed in farmed Atlantic salmon (Salmo salar L.) with nephrocalcinosis |
author_facet |
Klykken, Christine Reed, A.K. Dalum, Alf Seljenes Olsen, Rolf Erik Moe, Morten Kaare Attramadal, Kari Boissonnot, Lauris Jeannine Ernestine |
author_sort |
Klykken, Christine |
title |
Physiological changes observed in farmed Atlantic salmon (Salmo salar L.) with nephrocalcinosis |
title_short |
Physiological changes observed in farmed Atlantic salmon (Salmo salar L.) with nephrocalcinosis |
title_full |
Physiological changes observed in farmed Atlantic salmon (Salmo salar L.) with nephrocalcinosis |
title_fullStr |
Physiological changes observed in farmed Atlantic salmon (Salmo salar L.) with nephrocalcinosis |
title_full_unstemmed |
Physiological changes observed in farmed Atlantic salmon (Salmo salar L.) with nephrocalcinosis |
title_sort |
physiological changes observed in farmed atlantic salmon (salmo salar l.) with nephrocalcinosis |
publisher |
Elsevier Science |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3048752 https://doi.org/10.1016/j.aquaculture.2022.738104 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
1-10 554 Aquaculture |
op_relation |
Fiskeri- og havbruksnæringens forskningsfinansiering: 901587 Norges forskningsråd: 237856 Norges forskningsråd: 304498 Aquaculture. 2022, 554 1-10. urn:issn:0044-8486 https://hdl.handle.net/11250/3048752 https://doi.org/10.1016/j.aquaculture.2022.738104 cristin:2017206 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.aquaculture.2022.738104 |
container_title |
Aquaculture |
container_volume |
554 |
container_start_page |
738104 |
_version_ |
1766361054004117504 |