Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon
High pre-slaughter mortality rates of Atlantic salmon (Salmo salar L.) are a reoccurring welfare issue and economic burden in aquaculture. Sudden death immediately prior to slaughter is particularly problematic given the considerable resources invested to reach this stage. Although the underlying ca...
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ftoslouniv:oai:www.duo.uio.no:10852/81352 2024-09-30T14:32:23+00:00 Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon Frisk, Michael Høyland, Maren Zhang, Lili Vindas, Marco Øverli, Øyvind Johansen, Ida Beitnes 2020-08-06T09:53:00Z http://hdl.handle.net/10852/81352 http://urn.nb.no/URN:NBN:no-84450 https://doi.org/10.1016/j.aquaculture.2020.735615 EN eng NFR/267788 FHF/901586 NFR/303150 http://urn.nb.no/URN:NBN:no-84450 Frisk, Michael Høyland, Maren Zhang, Lili Vindas, Marco Øverli, Øyvind Johansen, Ida Beitnes . Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon. Aquaculture. 2020, 529 http://hdl.handle.net/10852/81352 1821956 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Aquaculture&rft.volume=529&rft.spage=&rft.date=2020 Aquaculture 529 https://doi.org/10.1016/j.aquaculture.2020.735615 URN:NBN:no-84450 Fulltext https://www.duo.uio.no/bitstream/handle/10852/81352/2/1-s2.0-S0044848620309728-main.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 0044-8486 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2020 ftoslouniv https://doi.org/10.1016/j.aquaculture.2020.735615 2024-09-12T05:44:03Z High pre-slaughter mortality rates of Atlantic salmon (Salmo salar L.) are a reoccurring welfare issue and economic burden in aquaculture. Sudden death immediately prior to slaughter is particularly problematic given the considerable resources invested to reach this stage. Although the underlying causes of such mortality are largely unknown, cardiac deformities and diseases have become increasingly prevalent observations in deceased fish. The factors leading to this pathology remains to be revealed. Thus, we presently examined if intensive smolt production and concordant fast growth rates in young fish is associated with altered cardiac morphology at later production stages in Atlantic salmon. The observed alterations were subsequently related to mortality risk following de-lousing in a facility with a cardiomyopathy syndrome (CMS) outbreak. We observed that intensive smolt production is indeed associated with slower growth rates at sea, distinct pathological cardiac morphological alterations, and expression of cardiac pathology markers. Moreover, the observed cardiac alterations co-occurred with CMS-related cardiac rupture at a different production facility. The present study demonstrates a clear link between pace of growth at early rearing stages and cardiac deformities later in life. Furthermore, these cardiac deformities are associated with cardiac rupture and mortality in individuals with CMS during delousing. We therefore believe that a slower pace of smolt production improves cardiac health and reduces the risk of mortality during CMS outbreaks. Article in Journal/Newspaper Atlantic salmon Salmo salar Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) Aquaculture 529 735615 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
High pre-slaughter mortality rates of Atlantic salmon (Salmo salar L.) are a reoccurring welfare issue and economic burden in aquaculture. Sudden death immediately prior to slaughter is particularly problematic given the considerable resources invested to reach this stage. Although the underlying causes of such mortality are largely unknown, cardiac deformities and diseases have become increasingly prevalent observations in deceased fish. The factors leading to this pathology remains to be revealed. Thus, we presently examined if intensive smolt production and concordant fast growth rates in young fish is associated with altered cardiac morphology at later production stages in Atlantic salmon. The observed alterations were subsequently related to mortality risk following de-lousing in a facility with a cardiomyopathy syndrome (CMS) outbreak. We observed that intensive smolt production is indeed associated with slower growth rates at sea, distinct pathological cardiac morphological alterations, and expression of cardiac pathology markers. Moreover, the observed cardiac alterations co-occurred with CMS-related cardiac rupture at a different production facility. The present study demonstrates a clear link between pace of growth at early rearing stages and cardiac deformities later in life. Furthermore, these cardiac deformities are associated with cardiac rupture and mortality in individuals with CMS during delousing. We therefore believe that a slower pace of smolt production improves cardiac health and reduces the risk of mortality during CMS outbreaks. |
format |
Article in Journal/Newspaper |
author |
Frisk, Michael Høyland, Maren Zhang, Lili Vindas, Marco Øverli, Øyvind Johansen, Ida Beitnes |
spellingShingle |
Frisk, Michael Høyland, Maren Zhang, Lili Vindas, Marco Øverli, Øyvind Johansen, Ida Beitnes Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon |
author_facet |
Frisk, Michael Høyland, Maren Zhang, Lili Vindas, Marco Øverli, Øyvind Johansen, Ida Beitnes |
author_sort |
Frisk, Michael |
title |
Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon |
title_short |
Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon |
title_full |
Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon |
title_fullStr |
Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon |
title_full_unstemmed |
Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon |
title_sort |
intensive smolt production is associated with deviating cardiac morphology in atlantic salmon |
publishDate |
2020 |
url |
http://hdl.handle.net/10852/81352 http://urn.nb.no/URN:NBN:no-84450 https://doi.org/10.1016/j.aquaculture.2020.735615 |
long_lat |
ENVELOPE(-85.633,-85.633,-78.617,-78.617) |
geographic |
Slaughter |
geographic_facet |
Slaughter |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
0044-8486 |
op_relation |
NFR/267788 FHF/901586 NFR/303150 http://urn.nb.no/URN:NBN:no-84450 Frisk, Michael Høyland, Maren Zhang, Lili Vindas, Marco Øverli, Øyvind Johansen, Ida Beitnes . Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon. Aquaculture. 2020, 529 http://hdl.handle.net/10852/81352 1821956 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Aquaculture&rft.volume=529&rft.spage=&rft.date=2020 Aquaculture 529 https://doi.org/10.1016/j.aquaculture.2020.735615 URN:NBN:no-84450 Fulltext https://www.duo.uio.no/bitstream/handle/10852/81352/2/1-s2.0-S0044848620309728-main.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1016/j.aquaculture.2020.735615 |
container_title |
Aquaculture |
container_volume |
529 |
container_start_page |
735615 |
_version_ |
1811636553213018112 |