Performance and welfare of Atlantic salmon, Salmo salar L. post‐smolts in recirculating aquaculture systems: Importance of salinity and water velocity
Abstract Producing a larger post‐smolt in recirculating aquaculture systems (RAS) could shorten the production time in sea cages and potentially reduce mortality. Knowledge of the biological requirements of post‐smolts in closed‐containment systems is however lacking. In the present study, the effec...
Published in: | Journal of the World Aquaculture Society |
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crwiley:10.1111/jwas.12682 2024-09-15T17:56:10+00:00 Performance and welfare of Atlantic salmon, Salmo salar L. post‐smolts in recirculating aquaculture systems: Importance of salinity and water velocity Ytrestøyl, Trine Takle, Harald Kolarevic, Jelena Calabrese, Sara Timmerhaus, Gerrit Rosseland, Bjørn O. Teien, Hans C. Nilsen, Tom O. Handeland, Sigurd O. Stefansson, Sigurd O. Ebbesson, Lars O. E. Terjesen, Bendik F. CtrlAQUA SFI Erko Settefisk Grieg Seafood Lerøy SeaFood Lingalaks Marine Harvest Norway Smøla Klekkeri og Settefisk The Research Council of Norway 2020 http://dx.doi.org/10.1111/jwas.12682 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjwas.12682 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jwas.12682 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jwas.12682 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Journal of the World Aquaculture Society volume 51, issue 2, page 373-392 ISSN 0893-8849 1749-7345 journal-article 2020 crwiley https://doi.org/10.1111/jwas.12682 2024-08-15T04:18:13Z Abstract Producing a larger post‐smolt in recirculating aquaculture systems (RAS) could shorten the production time in sea cages and potentially reduce mortality. Knowledge of the biological requirements of post‐smolts in closed‐containment systems is however lacking. In the present study, the effects of salinity and water velocity on growth, survival, health, and welfare of Atlantic salmon reared in RAS were examined. Salmon smolts were stocked in three separate RAS with salinities of 12, 22, and 32‰ and subjected to high (1.0 body lengths per s −1 ) or low (0.3 body lengths second −1 ) water velocity. Growth performance, survival, welfare, and physiological stress responses were monitored until the fish reached a bodyweight of around 450 g. Growth rate was higher at lower salinity and higher water velocity generally had a positive effect on growth in all salinities. Feed conversion ratio was lower at 12‰ compared to the 22 and 32‰ when the fish were between 250 and 450 g. Higher mortality, elevated plasma cortisol levels, higher incidence of cataract, and a higher expression of stress‐induced genes in the skin (iNOS, Muc5ac‐like) indicated a negative effect of higher salinity on fish welfare. Male maturation was low (<1%), and not affected by salinity or water velocity. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of the World Aquaculture Society 51 2 373 392 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Producing a larger post‐smolt in recirculating aquaculture systems (RAS) could shorten the production time in sea cages and potentially reduce mortality. Knowledge of the biological requirements of post‐smolts in closed‐containment systems is however lacking. In the present study, the effects of salinity and water velocity on growth, survival, health, and welfare of Atlantic salmon reared in RAS were examined. Salmon smolts were stocked in three separate RAS with salinities of 12, 22, and 32‰ and subjected to high (1.0 body lengths per s −1 ) or low (0.3 body lengths second −1 ) water velocity. Growth performance, survival, welfare, and physiological stress responses were monitored until the fish reached a bodyweight of around 450 g. Growth rate was higher at lower salinity and higher water velocity generally had a positive effect on growth in all salinities. Feed conversion ratio was lower at 12‰ compared to the 22 and 32‰ when the fish were between 250 and 450 g. Higher mortality, elevated plasma cortisol levels, higher incidence of cataract, and a higher expression of stress‐induced genes in the skin (iNOS, Muc5ac‐like) indicated a negative effect of higher salinity on fish welfare. Male maturation was low (<1%), and not affected by salinity or water velocity. |
author2 |
CtrlAQUA SFI Erko Settefisk Grieg Seafood Lerøy SeaFood Lingalaks Marine Harvest Norway Smøla Klekkeri og Settefisk The Research Council of Norway |
format |
Article in Journal/Newspaper |
author |
Ytrestøyl, Trine Takle, Harald Kolarevic, Jelena Calabrese, Sara Timmerhaus, Gerrit Rosseland, Bjørn O. Teien, Hans C. Nilsen, Tom O. Handeland, Sigurd O. Stefansson, Sigurd O. Ebbesson, Lars O. E. Terjesen, Bendik F. |
spellingShingle |
Ytrestøyl, Trine Takle, Harald Kolarevic, Jelena Calabrese, Sara Timmerhaus, Gerrit Rosseland, Bjørn O. Teien, Hans C. Nilsen, Tom O. Handeland, Sigurd O. Stefansson, Sigurd O. Ebbesson, Lars O. E. Terjesen, Bendik F. Performance and welfare of Atlantic salmon, Salmo salar L. post‐smolts in recirculating aquaculture systems: Importance of salinity and water velocity |
author_facet |
Ytrestøyl, Trine Takle, Harald Kolarevic, Jelena Calabrese, Sara Timmerhaus, Gerrit Rosseland, Bjørn O. Teien, Hans C. Nilsen, Tom O. Handeland, Sigurd O. Stefansson, Sigurd O. Ebbesson, Lars O. E. Terjesen, Bendik F. |
author_sort |
Ytrestøyl, Trine |
title |
Performance and welfare of Atlantic salmon, Salmo salar L. post‐smolts in recirculating aquaculture systems: Importance of salinity and water velocity |
title_short |
Performance and welfare of Atlantic salmon, Salmo salar L. post‐smolts in recirculating aquaculture systems: Importance of salinity and water velocity |
title_full |
Performance and welfare of Atlantic salmon, Salmo salar L. post‐smolts in recirculating aquaculture systems: Importance of salinity and water velocity |
title_fullStr |
Performance and welfare of Atlantic salmon, Salmo salar L. post‐smolts in recirculating aquaculture systems: Importance of salinity and water velocity |
title_full_unstemmed |
Performance and welfare of Atlantic salmon, Salmo salar L. post‐smolts in recirculating aquaculture systems: Importance of salinity and water velocity |
title_sort |
performance and welfare of atlantic salmon, salmo salar l. post‐smolts in recirculating aquaculture systems: importance of salinity and water velocity |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/jwas.12682 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjwas.12682 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jwas.12682 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jwas.12682 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of the World Aquaculture Society volume 51, issue 2, page 373-392 ISSN 0893-8849 1749-7345 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/jwas.12682 |
container_title |
Journal of the World Aquaculture Society |
container_volume |
51 |
container_issue |
2 |
container_start_page |
373 |
op_container_end_page |
392 |
_version_ |
1810432386861629440 |