Performance and welfare of Atlantic salmon, Salmo salar L. post-smolts in recirculating aquaculture systems: Importance of salinity and water velocity
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 sal...
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Online Access: | https://hdl.handle.net/11250/2687724 https://doi.org/10.1111/jwas.12682 |
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ftunivmob:oai:nmbu.brage.unit.no:11250/2687724 2023-05-15T15:31:25+02:00 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 Rune Kolarevic, Jelena Calabrese, Sara Timmerhaus, Gerrit Rosseland, Bjørn Olav Teien, Hans-Christian Nilsen, Tom Ole Handeland, Sigurd O Stefansson, Sigurd Ebbesson, Lars Terjesen, Bendik Fyhn 2020-07-21T13:55:47Z application/pdf https://hdl.handle.net/11250/2687724 https://doi.org/10.1111/jwas.12682 eng eng Journal of the World Aquaculture Society. 2020, 51 (2), 373-392. urn:issn:0893-8849 https://hdl.handle.net/11250/2687724 https://doi.org/10.1111/jwas.12682 cristin:1820052 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 373-392 51 Journal of the World Aquaculture Society 2 Peer reviewed Journal article 2020 ftunivmob https://doi.org/10.1111/jwas.12682 2021-09-23T20:16:20Z 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. publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar Open archive Norwegian University of Life Sciences: Brage NMBU Journal of the World Aquaculture Society 51 2 373 392 |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
op_collection_id |
ftunivmob |
language |
English |
description |
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. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Ytrestøyl, Trine Takle, Harald Rune Kolarevic, Jelena Calabrese, Sara Timmerhaus, Gerrit Rosseland, Bjørn Olav Teien, Hans-Christian Nilsen, Tom Ole Handeland, Sigurd O Stefansson, Sigurd Ebbesson, Lars Terjesen, Bendik Fyhn |
spellingShingle |
Ytrestøyl, Trine Takle, Harald Rune Kolarevic, Jelena Calabrese, Sara Timmerhaus, Gerrit Rosseland, Bjørn Olav Teien, Hans-Christian Nilsen, Tom Ole Handeland, Sigurd O Stefansson, Sigurd Ebbesson, Lars Terjesen, Bendik Fyhn 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 Rune Kolarevic, Jelena Calabrese, Sara Timmerhaus, Gerrit Rosseland, Bjørn Olav Teien, Hans-Christian Nilsen, Tom Ole Handeland, Sigurd O Stefansson, Sigurd Ebbesson, Lars Terjesen, Bendik Fyhn |
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 |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2687724 https://doi.org/10.1111/jwas.12682 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
373-392 51 Journal of the World Aquaculture Society 2 |
op_relation |
Journal of the World Aquaculture Society. 2020, 51 (2), 373-392. urn:issn:0893-8849 https://hdl.handle.net/11250/2687724 https://doi.org/10.1111/jwas.12682 cristin:1820052 |
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/10.1111/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_ |
1766361918657789952 |