Fatty acid metabolism in European sea bass (Dicentrarchus labrax) : effects of n-6 PUFA and MUFA in fish oil replaced diets
Monounsaturated fatty acids (MUFA)-rich and n-6 polyunsaturated fatty acid (n-6 PUFA)-rich vegetable oils are increasingly used as fish oil replacers for aquafeed formulation. The present study investigated the fatty acid metabolism in juvenile European sea bass (Dicentrarchus labrax, 38.4 g) fed di...
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ftdeakinunifig:oai:figshare.com:article/20960407 2023-05-15T18:10:00+02:00 Fatty acid metabolism in European sea bass (Dicentrarchus labrax) : effects of n-6 PUFA and MUFA in fish oil replaced diets T Eroldogan A Yılmaz Giovanni Turchini M Arslan N Sirkecioglu K Engin I Ozsahinoglu P Mumogullarında 2013-01-01T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30055450 https://figshare.com/articles/journal_contribution/Fatty_acid_metabolism_in_European_sea_bass_Dicentrarchus_labrax_effects_of_n-6_PUFA_and_MUFA_in_fish_oil_replaced_diets/20960407 unknown http://hdl.handle.net/10536/DRO/DU:30055450 https://figshare.com/articles/journal_contribution/Fatty_acid_metabolism_in_European_sea_bass_Dicentrarchus_labrax_effects_of_n-6_PUFA_and_MUFA_in_fish_oil_replaced_diets/20960407 All Rights Reserved Ecology dicentrarchus labrax canola oil cottonseed oil elongase Science & Technology Life Sciences & Biomedicine Biochemistry & Molecular Biology Fisheries Physiology Delta 6-desaturase beta-oxidation SALMON SALMO-SALAR BETA-OXIDATION CAPACITY FED VEGETABLE-OIL RAPESEED OIL PARTIAL SUBSTITUTION GROWTH-PERFORMANCE LIPID SOURCES BROWN TROUT LINSEED OIL OLIVE OIL Text Journal contribution 2013 ftdeakinunifig 2022-11-17T21:53:06Z Monounsaturated fatty acids (MUFA)-rich and n-6 polyunsaturated fatty acid (n-6 PUFA)-rich vegetable oils are increasingly used as fish oil replacers for aquafeed formulation. The present study investigated the fatty acid metabolism in juvenile European sea bass (Dicentrarchus labrax, 38.4 g) fed diets containing fish oil (FO, as the control treatment) or two different vegetable oils (the MUFA-rich canola/rapeseed oil, CO, and the n-6 PUFA-rich cottonseed oil, CSO) tested individually or as a 50/50 blend (CO/CSO). The whole-body fatty acid balance method was used to deduce the apparent in vivo fatty acid metabolism. No effect on growth performance and feed utilization was recorded. However, it should be noted that the fish meal content of the experimental diets was relatively high, and thus the requirement for n-3 long-chain polyunsaturated fatty acid (n-3 LC-PUFA) may have likely been fulfilled even if dietary fish oil was fully replaced by vegetable oils. Overall, relatively little apparent in vivo fatty acid bioconversion was recorded, whilst the apparent in vivo ?-oxidation of dietary fatty acid was largely affected by the dietary lipid source, with higher rate of ?-oxidation for those fatty acids which were provided in dietary surplus. The deposition of 20:5n-3 and 22:6n-3, as % of the dietary intake, was greatest for the fish fed on the CSO diet. It has been shown that European sea bass seems to be able to efficiently use n-6 PUFA for energy substrate, and this may help in minimizing the ?-oxidation of the health benefiting n-3 LC-PUFA and thus increase their deposition into fish tissues. Other Non-Article Part of Journal/Newspaper Salmo salar DRO - Deakin Research Online |
institution |
Open Polar |
collection |
DRO - Deakin Research Online |
op_collection_id |
ftdeakinunifig |
language |
unknown |
topic |
Ecology dicentrarchus labrax canola oil cottonseed oil elongase Science & Technology Life Sciences & Biomedicine Biochemistry & Molecular Biology Fisheries Physiology Delta 6-desaturase beta-oxidation SALMON SALMO-SALAR BETA-OXIDATION CAPACITY FED VEGETABLE-OIL RAPESEED OIL PARTIAL SUBSTITUTION GROWTH-PERFORMANCE LIPID SOURCES BROWN TROUT LINSEED OIL OLIVE OIL |
spellingShingle |
Ecology dicentrarchus labrax canola oil cottonseed oil elongase Science & Technology Life Sciences & Biomedicine Biochemistry & Molecular Biology Fisheries Physiology Delta 6-desaturase beta-oxidation SALMON SALMO-SALAR BETA-OXIDATION CAPACITY FED VEGETABLE-OIL RAPESEED OIL PARTIAL SUBSTITUTION GROWTH-PERFORMANCE LIPID SOURCES BROWN TROUT LINSEED OIL OLIVE OIL T Eroldogan A Yılmaz Giovanni Turchini M Arslan N Sirkecioglu K Engin I Ozsahinoglu P Mumogullarında Fatty acid metabolism in European sea bass (Dicentrarchus labrax) : effects of n-6 PUFA and MUFA in fish oil replaced diets |
topic_facet |
Ecology dicentrarchus labrax canola oil cottonseed oil elongase Science & Technology Life Sciences & Biomedicine Biochemistry & Molecular Biology Fisheries Physiology Delta 6-desaturase beta-oxidation SALMON SALMO-SALAR BETA-OXIDATION CAPACITY FED VEGETABLE-OIL RAPESEED OIL PARTIAL SUBSTITUTION GROWTH-PERFORMANCE LIPID SOURCES BROWN TROUT LINSEED OIL OLIVE OIL |
description |
Monounsaturated fatty acids (MUFA)-rich and n-6 polyunsaturated fatty acid (n-6 PUFA)-rich vegetable oils are increasingly used as fish oil replacers for aquafeed formulation. The present study investigated the fatty acid metabolism in juvenile European sea bass (Dicentrarchus labrax, 38.4 g) fed diets containing fish oil (FO, as the control treatment) or two different vegetable oils (the MUFA-rich canola/rapeseed oil, CO, and the n-6 PUFA-rich cottonseed oil, CSO) tested individually or as a 50/50 blend (CO/CSO). The whole-body fatty acid balance method was used to deduce the apparent in vivo fatty acid metabolism. No effect on growth performance and feed utilization was recorded. However, it should be noted that the fish meal content of the experimental diets was relatively high, and thus the requirement for n-3 long-chain polyunsaturated fatty acid (n-3 LC-PUFA) may have likely been fulfilled even if dietary fish oil was fully replaced by vegetable oils. Overall, relatively little apparent in vivo fatty acid bioconversion was recorded, whilst the apparent in vivo ?-oxidation of dietary fatty acid was largely affected by the dietary lipid source, with higher rate of ?-oxidation for those fatty acids which were provided in dietary surplus. The deposition of 20:5n-3 and 22:6n-3, as % of the dietary intake, was greatest for the fish fed on the CSO diet. It has been shown that European sea bass seems to be able to efficiently use n-6 PUFA for energy substrate, and this may help in minimizing the ?-oxidation of the health benefiting n-3 LC-PUFA and thus increase their deposition into fish tissues. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
T Eroldogan A Yılmaz Giovanni Turchini M Arslan N Sirkecioglu K Engin I Ozsahinoglu P Mumogullarında |
author_facet |
T Eroldogan A Yılmaz Giovanni Turchini M Arslan N Sirkecioglu K Engin I Ozsahinoglu P Mumogullarında |
author_sort |
T Eroldogan |
title |
Fatty acid metabolism in European sea bass (Dicentrarchus labrax) : effects of n-6 PUFA and MUFA in fish oil replaced diets |
title_short |
Fatty acid metabolism in European sea bass (Dicentrarchus labrax) : effects of n-6 PUFA and MUFA in fish oil replaced diets |
title_full |
Fatty acid metabolism in European sea bass (Dicentrarchus labrax) : effects of n-6 PUFA and MUFA in fish oil replaced diets |
title_fullStr |
Fatty acid metabolism in European sea bass (Dicentrarchus labrax) : effects of n-6 PUFA and MUFA in fish oil replaced diets |
title_full_unstemmed |
Fatty acid metabolism in European sea bass (Dicentrarchus labrax) : effects of n-6 PUFA and MUFA in fish oil replaced diets |
title_sort |
fatty acid metabolism in european sea bass (dicentrarchus labrax) : effects of n-6 pufa and mufa in fish oil replaced diets |
publishDate |
2013 |
url |
http://hdl.handle.net/10536/DRO/DU:30055450 https://figshare.com/articles/journal_contribution/Fatty_acid_metabolism_in_European_sea_bass_Dicentrarchus_labrax_effects_of_n-6_PUFA_and_MUFA_in_fish_oil_replaced_diets/20960407 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_relation |
http://hdl.handle.net/10536/DRO/DU:30055450 https://figshare.com/articles/journal_contribution/Fatty_acid_metabolism_in_European_sea_bass_Dicentrarchus_labrax_effects_of_n-6_PUFA_and_MUFA_in_fish_oil_replaced_diets/20960407 |
op_rights |
All Rights Reserved |
_version_ |
1766182721835499520 |