Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition
Lumpfish is used to control sea lice in open net-pen farming of Atlantic salmon, but little is known about their nutritional requirements. The aim of this study was to investigate the effects of replacing marine oil (MO) with rapeseed oil (RO), in diets incorporating 50 % plant protein concentrates,...
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2021
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Online Access: | https://doi.org/10.1016/j.aqrep.2020.100560 https://doaj.org/article/48e7fa5ab09e4c27b7e83b827a5e8ae3 |
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ftdoajarticles:oai:doaj.org/article:48e7fa5ab09e4c27b7e83b827a5e8ae3 2023-05-15T15:32:55+02:00 Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition Florence Perera Willora Bjørn Grønevik Cui Liu Anjana Palihawadana Mette Sørensen Ørjan Hagen 2021-03-01T00:00:00Z https://doi.org/10.1016/j.aqrep.2020.100560 https://doaj.org/article/48e7fa5ab09e4c27b7e83b827a5e8ae3 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2352513420306530 https://doaj.org/toc/2352-5134 2352-5134 doi:10.1016/j.aqrep.2020.100560 https://doaj.org/article/48e7fa5ab09e4c27b7e83b827a5e8ae3 Aquaculture Reports, Vol 19, Iss , Pp 100560- (2021) Lumpfish Robustness Feed ingredients Rapeseed oil Growth Chemical composition Aquaculture. Fisheries. Angling SH1-691 article 2021 ftdoajarticles https://doi.org/10.1016/j.aqrep.2020.100560 2022-12-31T10:29:50Z Lumpfish is used to control sea lice in open net-pen farming of Atlantic salmon, but little is known about their nutritional requirements. The aim of this study was to investigate the effects of replacing marine oil (MO) with rapeseed oil (RO), in diets incorporating 50 % plant protein concentrates, on the growth, chemical and fatty acid (FA) composition of juvenile lumpfish. Four extruded diets, nearly iso-lipidic (14–15% DM) and iso-nitrogenous (53–54% DM) were produced with either 10 % MO (fish oil : krill oil constant proportion 2.3 : 1; Control), or the MO replaced with either 25 %, 50 % or 100 % replacement with RO to give the diets identified as RO25, RO50 and RO100, respectively. Triplicate groups of fish (7 ± 0.18 g) were fed the experimental diets ad libitum during 6 weeks. No significant effects were found on growth parameters, specific growth rate, hepatosomatic index (HSI), visero-somatic index, condition factor (CF), and whole body chemical composition when 50 % of MO was replaced by RO. Monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) in whole body, liver and muscles were also not affected by the 50 % replacement of MO. Total substitution of MO with RO significantly reduced the growth performance, and CF, but increased the HSI, and crude lipid in whole body and liver, accompanied by lipid deposition. At the end of the experiment, saturated fatty acids (SFA), PUFA, n-3 FA and eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) in whole body, muscles, and liver decreased (p < 0.05), while MUFA, and total n-6 FA increased (p < 0.05) in fish fed RO100. In conclusion, the results of the present study suggest that dietary inclusion of 50 % RO in diets where the protein content was derived from marine/plant origin (50/50), did not impair the growth of juvenile lumpfish. Article in Journal/Newspaper Atlantic salmon Directory of Open Access Journals: DOAJ Articles Aquaculture Reports 19 100560 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Lumpfish Robustness Feed ingredients Rapeseed oil Growth Chemical composition Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
Lumpfish Robustness Feed ingredients Rapeseed oil Growth Chemical composition Aquaculture. Fisheries. Angling SH1-691 Florence Perera Willora Bjørn Grønevik Cui Liu Anjana Palihawadana Mette Sørensen Ørjan Hagen Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition |
topic_facet |
Lumpfish Robustness Feed ingredients Rapeseed oil Growth Chemical composition Aquaculture. Fisheries. Angling SH1-691 |
description |
Lumpfish is used to control sea lice in open net-pen farming of Atlantic salmon, but little is known about their nutritional requirements. The aim of this study was to investigate the effects of replacing marine oil (MO) with rapeseed oil (RO), in diets incorporating 50 % plant protein concentrates, on the growth, chemical and fatty acid (FA) composition of juvenile lumpfish. Four extruded diets, nearly iso-lipidic (14–15% DM) and iso-nitrogenous (53–54% DM) were produced with either 10 % MO (fish oil : krill oil constant proportion 2.3 : 1; Control), or the MO replaced with either 25 %, 50 % or 100 % replacement with RO to give the diets identified as RO25, RO50 and RO100, respectively. Triplicate groups of fish (7 ± 0.18 g) were fed the experimental diets ad libitum during 6 weeks. No significant effects were found on growth parameters, specific growth rate, hepatosomatic index (HSI), visero-somatic index, condition factor (CF), and whole body chemical composition when 50 % of MO was replaced by RO. Monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) in whole body, liver and muscles were also not affected by the 50 % replacement of MO. Total substitution of MO with RO significantly reduced the growth performance, and CF, but increased the HSI, and crude lipid in whole body and liver, accompanied by lipid deposition. At the end of the experiment, saturated fatty acids (SFA), PUFA, n-3 FA and eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) in whole body, muscles, and liver decreased (p < 0.05), while MUFA, and total n-6 FA increased (p < 0.05) in fish fed RO100. In conclusion, the results of the present study suggest that dietary inclusion of 50 % RO in diets where the protein content was derived from marine/plant origin (50/50), did not impair the growth of juvenile lumpfish. |
format |
Article in Journal/Newspaper |
author |
Florence Perera Willora Bjørn Grønevik Cui Liu Anjana Palihawadana Mette Sørensen Ørjan Hagen |
author_facet |
Florence Perera Willora Bjørn Grønevik Cui Liu Anjana Palihawadana Mette Sørensen Ørjan Hagen |
author_sort |
Florence Perera Willora |
title |
Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition |
title_short |
Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition |
title_full |
Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition |
title_fullStr |
Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition |
title_full_unstemmed |
Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition |
title_sort |
total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (cyclopterus lumpus): effects on growth performance, chemical and fatty acid composition |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.aqrep.2020.100560 https://doaj.org/article/48e7fa5ab09e4c27b7e83b827a5e8ae3 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Aquaculture Reports, Vol 19, Iss , Pp 100560- (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2352513420306530 https://doaj.org/toc/2352-5134 2352-5134 doi:10.1016/j.aqrep.2020.100560 https://doaj.org/article/48e7fa5ab09e4c27b7e83b827a5e8ae3 |
op_doi |
https://doi.org/10.1016/j.aqrep.2020.100560 |
container_title |
Aquaculture Reports |
container_volume |
19 |
container_start_page |
100560 |
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1766363386785824768 |