Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L.
Farmed eels had lower levels of arachidonic acid (20:4 n-6) (ARA) and higher ratios of eicosapentaenoic acid (20:5 n-3) (EPA):ARA compared to wild European eels collected from the Baltic Sea and southern Norwegian coast. Eels fed a formulated feed (JD) with a distribution of essential fatty acids (E...
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Language: | English |
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ftdtupubl:oai:pure.atira.dk:publications/07c29ce1-2df1-44f3-a9ad-672e671e74b5 2024-01-14T09:59:19+01:00 Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. Støttrup, Josianne Jacobsen, Charlotte Tomkiewicz, Jonna Jarlbæk, Henrik 2013 https://orbit.dtu.dk/en/publications/07c29ce1-2df1-44f3-a9ad-672e671e74b5 https://doi.org/10.1111/j.1365-2095.2012.00967.x eng eng https://orbit.dtu.dk/en/publications/07c29ce1-2df1-44f3-a9ad-672e671e74b5 info:eu-repo/semantics/closedAccess Støttrup , J , Jacobsen , C , Tomkiewicz , J & Jarlbæk , H 2013 , ' Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. ' , Aquaculture Nutrition , vol. 19 , no. 2 , pp. 172-185 . https://doi.org/10.1111/j.1365-2095.2012.00967.x article 2013 ftdtupubl https://doi.org/10.1111/j.1365-2095.2012.00967.x 2023-12-20T23:58:06Z Farmed eels had lower levels of arachidonic acid (20:4 n-6) (ARA) and higher ratios of eicosapentaenoic acid (20:5 n-3) (EPA):ARA compared to wild European eels collected from the Baltic Sea and southern Norwegian coast. Eels fed a formulated feed (JD) with a distribution of essential fatty acids (EFA) resembling wild European eel were sampled after 0, 5, 10, 14 and 44 weeks of feeding to examine changes in fatty acid composition (FAC) in ovaries, visceral fat and muscle. The results showed a slow but steady incorporation of EFA. Lipids are incorporated in the oocytes early in oogenesis, and the leading cohort of oocytes is rich in lipid droplets before the onset of vitellogenesis. This indicates that feeding with optimized broodstock feeds should start early to allow the incorporation of EFA in the first cohort of oocytes. At least 14 weeks of feeding is required to change lipid EFA in broodstock eel to resemble EFA in the diet or in wild fish. After 44 weeks of feeding, ARA was significantly higher in the neutral lipids of ovaries (1.9%) compared to visceral fat (1.2%) or muscle (1.0%). EPA:ARA ratios decreased two- to threefold in all tissues examined during that time. ARA and docosahexaenoic acid (22:6 n-3) (DHA) had accumulated in ovarian polar lipids Article in Journal/Newspaper Anguilla anguilla Technical University of Denmark: DTU Orbit Aquaculture Nutrition 19 2 172 185 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
Farmed eels had lower levels of arachidonic acid (20:4 n-6) (ARA) and higher ratios of eicosapentaenoic acid (20:5 n-3) (EPA):ARA compared to wild European eels collected from the Baltic Sea and southern Norwegian coast. Eels fed a formulated feed (JD) with a distribution of essential fatty acids (EFA) resembling wild European eel were sampled after 0, 5, 10, 14 and 44 weeks of feeding to examine changes in fatty acid composition (FAC) in ovaries, visceral fat and muscle. The results showed a slow but steady incorporation of EFA. Lipids are incorporated in the oocytes early in oogenesis, and the leading cohort of oocytes is rich in lipid droplets before the onset of vitellogenesis. This indicates that feeding with optimized broodstock feeds should start early to allow the incorporation of EFA in the first cohort of oocytes. At least 14 weeks of feeding is required to change lipid EFA in broodstock eel to resemble EFA in the diet or in wild fish. After 44 weeks of feeding, ARA was significantly higher in the neutral lipids of ovaries (1.9%) compared to visceral fat (1.2%) or muscle (1.0%). EPA:ARA ratios decreased two- to threefold in all tissues examined during that time. ARA and docosahexaenoic acid (22:6 n-3) (DHA) had accumulated in ovarian polar lipids |
format |
Article in Journal/Newspaper |
author |
Støttrup, Josianne Jacobsen, Charlotte Tomkiewicz, Jonna Jarlbæk, Henrik |
spellingShingle |
Støttrup, Josianne Jacobsen, Charlotte Tomkiewicz, Jonna Jarlbæk, Henrik Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. |
author_facet |
Støttrup, Josianne Jacobsen, Charlotte Tomkiewicz, Jonna Jarlbæk, Henrik |
author_sort |
Støttrup, Josianne |
title |
Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. |
title_short |
Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. |
title_full |
Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. |
title_fullStr |
Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. |
title_full_unstemmed |
Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. |
title_sort |
modification of essential fatty acid composition in broodstock of cultured european eel anguilla anguilla l. |
publishDate |
2013 |
url |
https://orbit.dtu.dk/en/publications/07c29ce1-2df1-44f3-a9ad-672e671e74b5 https://doi.org/10.1111/j.1365-2095.2012.00967.x |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Støttrup , J , Jacobsen , C , Tomkiewicz , J & Jarlbæk , H 2013 , ' Modification of essential fatty acid composition in broodstock of cultured European eel Anguilla anguilla L. ' , Aquaculture Nutrition , vol. 19 , no. 2 , pp. 172-185 . https://doi.org/10.1111/j.1365-2095.2012.00967.x |
op_relation |
https://orbit.dtu.dk/en/publications/07c29ce1-2df1-44f3-a9ad-672e671e74b5 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/j.1365-2095.2012.00967.x |
container_title |
Aquaculture Nutrition |
container_volume |
19 |
container_issue |
2 |
container_start_page |
172 |
op_container_end_page |
185 |
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1788058348306825216 |