Fast currents reduce production performance of post-smolt Atlantic salmon.
In the future, an increasing number of salmon farms may be located in areas with fast water current velocity due to limited availability of more sheltered locations. However, there is little information as to how fast currents affect fish health and welfare. We used raceways to expose Atlantic salmo...
Published in: | Aquaculture Environment Interactions |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter Research
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/2391195 https://doi.org/10.3354/aei00143 |
id |
ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2391195 |
---|---|
record_format |
openpolar |
spelling |
ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2391195 2023-05-15T15:31:39+02:00 Fast currents reduce production performance of post-smolt Atlantic salmon. Solstorm, Frida Solstorm, David Oppedal, Frode Fernø, Anders Fraser, Thomas Olsen, Rolf Erik 2015-09-22T12:31:25Z http://hdl.handle.net/11250/2391195 https://doi.org/10.3354/aei00143 eng eng Inter Research Norges forskningsråd: 207116 Aquaculture Environment Interactions 2015, 7:125-134 urn:issn:1869-7534 http://hdl.handle.net/11250/2391195 https://doi.org/10.3354/aei00143 cristin:1266152 Navngivelse 3.0 Norge http://creativecommons.org/licenses/by/3.0/no/ CC-BY 125-134 7 Aquaculture Environment Interactions VDP::Landbruks- og fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922 VDP::Agriculture and fisheries science: 900::Fisheries science: 920::Aquaculture: 922 Journal article Peer reviewed 2015 ftntnutrondheimi https://doi.org/10.3354/aei00143 2019-09-17T06:50:51Z In the future, an increasing number of salmon farms may be located in areas with fast water current velocity due to limited availability of more sheltered locations. However, there is little information as to how fast currents affect fish health and welfare. We used raceways to expose Atlantic salmon post-smolts (98.6 g, 22.3 cm) to homogeneous water velocities corresponding to 0.2, 0.8 and 1.5 body lengths s-1 (slow, moderate and fast, respectively) over 6 wk. Fish at fast velocity had a 5% lower weight gain compared to fish at moderate and slow velocities, with a corresponding reduction in length. Fish at moderate and fast velocities had lower lipid content in the muscle compared to fish at slow velocity. Hence, fish at slow and moderate velocities had the same weight gain, but fish at slow velocity gained more fat and fish at moderate velocity more muscle protein. Fish at fast velocity had a higher relative ventricular mass, indicating an increased cardiac workload. At slow velocity, individual fish displayed elevated plasma levels of lactate, osmolality and potassium. Our results suggest that post-smolts had the best growth and welfare at moderate velocity and that a current velocity of 1.5 body lengths s-1 could compromise production performance. © The authors 2015. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un -restricted. Authors and original publication must be credited. Article in Journal/Newspaper Atlantic salmon NTNU Open Archive (Norwegian University of Science and Technology) Aquaculture Environment Interactions 7 2 125 134 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
topic |
VDP::Landbruks- og fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922 VDP::Agriculture and fisheries science: 900::Fisheries science: 920::Aquaculture: 922 |
spellingShingle |
VDP::Landbruks- og fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922 VDP::Agriculture and fisheries science: 900::Fisheries science: 920::Aquaculture: 922 Solstorm, Frida Solstorm, David Oppedal, Frode Fernø, Anders Fraser, Thomas Olsen, Rolf Erik Fast currents reduce production performance of post-smolt Atlantic salmon. |
topic_facet |
VDP::Landbruks- og fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922 VDP::Agriculture and fisheries science: 900::Fisheries science: 920::Aquaculture: 922 |
description |
In the future, an increasing number of salmon farms may be located in areas with fast water current velocity due to limited availability of more sheltered locations. However, there is little information as to how fast currents affect fish health and welfare. We used raceways to expose Atlantic salmon post-smolts (98.6 g, 22.3 cm) to homogeneous water velocities corresponding to 0.2, 0.8 and 1.5 body lengths s-1 (slow, moderate and fast, respectively) over 6 wk. Fish at fast velocity had a 5% lower weight gain compared to fish at moderate and slow velocities, with a corresponding reduction in length. Fish at moderate and fast velocities had lower lipid content in the muscle compared to fish at slow velocity. Hence, fish at slow and moderate velocities had the same weight gain, but fish at slow velocity gained more fat and fish at moderate velocity more muscle protein. Fish at fast velocity had a higher relative ventricular mass, indicating an increased cardiac workload. At slow velocity, individual fish displayed elevated plasma levels of lactate, osmolality and potassium. Our results suggest that post-smolts had the best growth and welfare at moderate velocity and that a current velocity of 1.5 body lengths s-1 could compromise production performance. © The authors 2015. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un -restricted. Authors and original publication must be credited. |
format |
Article in Journal/Newspaper |
author |
Solstorm, Frida Solstorm, David Oppedal, Frode Fernø, Anders Fraser, Thomas Olsen, Rolf Erik |
author_facet |
Solstorm, Frida Solstorm, David Oppedal, Frode Fernø, Anders Fraser, Thomas Olsen, Rolf Erik |
author_sort |
Solstorm, Frida |
title |
Fast currents reduce production performance of post-smolt Atlantic salmon. |
title_short |
Fast currents reduce production performance of post-smolt Atlantic salmon. |
title_full |
Fast currents reduce production performance of post-smolt Atlantic salmon. |
title_fullStr |
Fast currents reduce production performance of post-smolt Atlantic salmon. |
title_full_unstemmed |
Fast currents reduce production performance of post-smolt Atlantic salmon. |
title_sort |
fast currents reduce production performance of post-smolt atlantic salmon. |
publisher |
Inter Research |
publishDate |
2015 |
url |
http://hdl.handle.net/11250/2391195 https://doi.org/10.3354/aei00143 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
125-134 7 Aquaculture Environment Interactions |
op_relation |
Norges forskningsråd: 207116 Aquaculture Environment Interactions 2015, 7:125-134 urn:issn:1869-7534 http://hdl.handle.net/11250/2391195 https://doi.org/10.3354/aei00143 cristin:1266152 |
op_rights |
Navngivelse 3.0 Norge http://creativecommons.org/licenses/by/3.0/no/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/aei00143 |
container_title |
Aquaculture Environment Interactions |
container_volume |
7 |
container_issue |
2 |
container_start_page |
125 |
op_container_end_page |
134 |
_version_ |
1766362183551156224 |