Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus)
The aim of this 15-month feeding study was to investigate the effects of more sustainable feeds on specific growth rate, fatty acid composition and metabolism of Arctic charr (Salvelinus alpinus). A control feed, formulated with fish meal and fish oil (F1), was compared with feeds where the marine i...
Published in: | Aquaculture |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | http://hdl.handle.net/1893/20618 https://doi.org/10.1016/j.aquaculture.2014.03.039 http://dspace.stir.ac.uk/bitstream/1893/20618/1/Arctic%20charr%20pumkinseedmeal%20final.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/20618 2023-05-15T14:23:29+02:00 Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus) Murray, David S Hager, Hannes Tocher, Douglas R Kainz, Martin J WasserCluster Lunz Institute of Aquaculture orcid:0000-0002-8603-9410 2014-07-20 application/pdf http://hdl.handle.net/1893/20618 https://doi.org/10.1016/j.aquaculture.2014.03.039 http://dspace.stir.ac.uk/bitstream/1893/20618/1/Arctic%20charr%20pumkinseedmeal%20final.pdf en eng Elsevier Murray DS, Hager H, Tocher DR & Kainz MJ (2014) Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus). Aquaculture, 431, pp. 85-91. https://doi.org/10.1016/j.aquaculture.2014.03.039 http://hdl.handle.net/1893/20618 doi:10.1016/j.aquaculture.2014.03.039 WOS:000340852500011 2-s2.0-84899157981 625669 http://dspace.stir.ac.uk/bitstream/1893/20618/1/Arctic%20charr%20pumkinseedmeal%20final.pdf To be published in Aquaculture by Elsevier; Elsevier believes that individual authors should be able to distribute their accepted author manuscripts for their personal voluntary needs and interests, e.g. posting to their websites or their institution’s repository, e-mailing to colleagues. The Elsevier Policy is as follows: Authors retain the right to use the accepted author manuscript for personal use, internal institutional use and for permitted scholarly posting provided that these are not for purposes of commercial use or systematic distribution. An "accepted author manuscript" is the author’s version of the manuscript of an article that has been accepted for publication and which may include any author-incorporated changes suggested through the processes of submission processing, peer review, and editor-author communications. fatty acids physiology tissue retention Journal Article AM - Accepted Manuscript 2014 ftunivstirling https://doi.org/10.1016/j.aquaculture.2014.03.039 2022-06-13T18:45:42Z The aim of this 15-month feeding study was to investigate the effects of more sustainable feeds on specific growth rate, fatty acid composition and metabolism of Arctic charr (Salvelinus alpinus). A control feed, formulated with fish meal and fish oil (F1), was compared with feeds where the marine ingredients were increasingly replaced by pumpkin kernel cake and rapeseed oil (Feeds F2, F3, and F4). Arctic charr were randomly distributed into 12 tanks and fed one of the feeds in triplicate. The biomass of fish fed F1 and F2 diets was significantly higher compared to fish fed diet F4 with highest replacement level. However, the dorsal and ventral muscle tissues had very similar total saturated, monounsaturated, and polyunsaturated fatty acid (PUFA) contents, irrespective of dietary supply. Although diets F3 and F4 contained 6-fold less fish oil than diets F1 and F2, fish fed diets F3 and F4 retained only 2-fold less highly desired omega-3 (n-3) long-chain (LC)-PUFA in their dorsal and ventral muscle tissues. Incubating isolated hepatocytes with 14C-labeled -linolenic acid (18:3n-3) provided evidence that Arctic charr can bioconvert this essential dietary PUFA to n-3 LC-PUFA, including docosahexaenoic acid. The results suggested that tissue fatty acid compositions in Arctic charr are dependent, not only on dietary fatty acid supply, but also on their ability for endogenous synthesis of n-3 LC-PUFA. Finally, this long-term feeding study indicated that feeds containing pumpkinseed press cake and rapeseed oil produced fish with largely similar fatty acid composition to fish fed diets containing higher contents of fish meal and fish oil. Article in Journal/Newspaper Arctic Arctic charr Arctic Salvelinus alpinus University of Stirling: Stirling Digital Research Repository Arctic Aquaculture 431 85 91 |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
fatty acids physiology tissue retention |
spellingShingle |
fatty acids physiology tissue retention Murray, David S Hager, Hannes Tocher, Douglas R Kainz, Martin J Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus) |
topic_facet |
fatty acids physiology tissue retention |
description |
The aim of this 15-month feeding study was to investigate the effects of more sustainable feeds on specific growth rate, fatty acid composition and metabolism of Arctic charr (Salvelinus alpinus). A control feed, formulated with fish meal and fish oil (F1), was compared with feeds where the marine ingredients were increasingly replaced by pumpkin kernel cake and rapeseed oil (Feeds F2, F3, and F4). Arctic charr were randomly distributed into 12 tanks and fed one of the feeds in triplicate. The biomass of fish fed F1 and F2 diets was significantly higher compared to fish fed diet F4 with highest replacement level. However, the dorsal and ventral muscle tissues had very similar total saturated, monounsaturated, and polyunsaturated fatty acid (PUFA) contents, irrespective of dietary supply. Although diets F3 and F4 contained 6-fold less fish oil than diets F1 and F2, fish fed diets F3 and F4 retained only 2-fold less highly desired omega-3 (n-3) long-chain (LC)-PUFA in their dorsal and ventral muscle tissues. Incubating isolated hepatocytes with 14C-labeled -linolenic acid (18:3n-3) provided evidence that Arctic charr can bioconvert this essential dietary PUFA to n-3 LC-PUFA, including docosahexaenoic acid. The results suggested that tissue fatty acid compositions in Arctic charr are dependent, not only on dietary fatty acid supply, but also on their ability for endogenous synthesis of n-3 LC-PUFA. Finally, this long-term feeding study indicated that feeds containing pumpkinseed press cake and rapeseed oil produced fish with largely similar fatty acid composition to fish fed diets containing higher contents of fish meal and fish oil. |
author2 |
WasserCluster Lunz Institute of Aquaculture orcid:0000-0002-8603-9410 |
format |
Article in Journal/Newspaper |
author |
Murray, David S Hager, Hannes Tocher, Douglas R Kainz, Martin J |
author_facet |
Murray, David S Hager, Hannes Tocher, Douglas R Kainz, Martin J |
author_sort |
Murray, David S |
title |
Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus) |
title_short |
Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus) |
title_full |
Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus) |
title_fullStr |
Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus) |
title_full_unstemmed |
Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus) |
title_sort |
effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in arctic charr (salvelinus alpinus) |
publisher |
Elsevier |
publishDate |
2014 |
url |
http://hdl.handle.net/1893/20618 https://doi.org/10.1016/j.aquaculture.2014.03.039 http://dspace.stir.ac.uk/bitstream/1893/20618/1/Arctic%20charr%20pumkinseedmeal%20final.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic Arctic charr Arctic Salvelinus alpinus |
op_relation |
Murray DS, Hager H, Tocher DR & Kainz MJ (2014) Effect of partial replacement of dietary fish meal and oil by pumpkin kernel cake and rapeseed oil on fatty acid composition and metabolism in Arctic charr (Salvelinus alpinus). Aquaculture, 431, pp. 85-91. https://doi.org/10.1016/j.aquaculture.2014.03.039 http://hdl.handle.net/1893/20618 doi:10.1016/j.aquaculture.2014.03.039 WOS:000340852500011 2-s2.0-84899157981 625669 http://dspace.stir.ac.uk/bitstream/1893/20618/1/Arctic%20charr%20pumkinseedmeal%20final.pdf |
op_rights |
To be published in Aquaculture by Elsevier; Elsevier believes that individual authors should be able to distribute their accepted author manuscripts for their personal voluntary needs and interests, e.g. posting to their websites or their institution’s repository, e-mailing to colleagues. The Elsevier Policy is as follows: Authors retain the right to use the accepted author manuscript for personal use, internal institutional use and for permitted scholarly posting provided that these are not for purposes of commercial use or systematic distribution. An "accepted author manuscript" is the author’s version of the manuscript of an article that has been accepted for publication and which may include any author-incorporated changes suggested through the processes of submission processing, peer review, and editor-author communications. |
op_doi |
https://doi.org/10.1016/j.aquaculture.2014.03.039 |
container_title |
Aquaculture |
container_volume |
431 |
container_start_page |
85 |
op_container_end_page |
91 |
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1766296026485882880 |