Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens
The aim of this project was to develop a water-stable and palatable diet for the supplementary feeding of wrasse deployed in salmon sea-pens using a gelling agent mixed with a manufactured dry-feed component. Three binders (gelatine from cold water fish skin, beef gelatin and agar-agar) were compare...
Published in: | Animal Feed Science and Technology |
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Main Authors: | , , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2015
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Subjects: | |
Online Access: | http://hdl.handle.net/1893/22389 https://doi.org/10.1016/j.anifeedsci.2015.06.026 http://dspace.stir.ac.uk/bitstream/1893/22389/1/RevisedMS-ANIFEE%20-15-6195-R3-UNMARKED%20%281%29.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/22389 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
Agar Biological control Binder Palatability Supplementary feeding Water stability |
spellingShingle |
Agar Biological control Binder Palatability Supplementary feeding Water stability Leclercq, Eric Graham, Philip Migaud, Herve Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens |
topic_facet |
Agar Biological control Binder Palatability Supplementary feeding Water stability |
description |
The aim of this project was to develop a water-stable and palatable diet for the supplementary feeding of wrasse deployed in salmon sea-pens using a gelling agent mixed with a manufactured dry-feed component. Three binders (gelatine from cold water fish skin, beef gelatin and agar-agar) were compared for water-gel strength over a range of concentrations. Gel formed using agar was found to be significantly stronger than the other binders tested. An experimental aqua-feed made using a grinded, dry ingredient mix binded with 20g/L agar solution at 1/1.6 (w/v) ratio and offered as blocks within individual feeders was water-stable for 7 days when deployed fresh or following a week of preservation at -20°C. Farmed ballan wrasse in tanks fed on the agar-based diet within 2 days of deployment. Wild wrasse stocked in salmon sea-pens at low density (1.2-2.1%), up to 4 weeks prior the start of the trial and not previously fed a manufactured diet first ingested the agar feed within 2 weeks and total feed intake significantly increased afterwards. Feed intake was significantly higher from feeders placed within a small feeding shelter made of artificial kelp than within the large wrasse shelter. No nutrient leaching after water immersion and no alterations in the fatty acid profile after preparation of the experimental feed was found. A manufactured grinded ingredient mix binded with 20g/L agar solution at a 1/1.6 (w/v) ratio and offered within static feeders is proposed as the basis of a novel supplementary feeding methodology for cleaner fish wrasse deployed in salmon sea-pens. This methodology has the potential to facilitate wrasse feeding and to allow the monitoring of feed intake to safeguard the health, welfare and delousing activity of the biological stock over the salmon rearing cycle. |
author2 |
J Sainsbury plc Institute of Aquaculture University of Stirling orcid:0000-0002-5404-7512 |
format |
Article in Journal/Newspaper |
author |
Leclercq, Eric Graham, Philip Migaud, Herve |
author_facet |
Leclercq, Eric Graham, Philip Migaud, Herve |
author_sort |
Leclercq, Eric |
title |
Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens |
title_short |
Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens |
title_full |
Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens |
title_fullStr |
Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens |
title_full_unstemmed |
Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens |
title_sort |
development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (labrus bergylta) deployed within commercial atlantic salmon (salmon salar) net-pens |
publisher |
Elsevier |
publishDate |
2015 |
url |
http://hdl.handle.net/1893/22389 https://doi.org/10.1016/j.anifeedsci.2015.06.026 http://dspace.stir.ac.uk/bitstream/1893/22389/1/RevisedMS-ANIFEE%20-15-6195-R3-UNMARKED%20%281%29.pdf |
long_lat |
ENVELOPE(12.203,12.203,65.945,65.945) |
geographic |
Ballan |
geographic_facet |
Ballan |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
Leclercq E, Graham P & Migaud H (2015) Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens. Animal Feed Science and Technology, 208, pp. 98-106. https://doi.org/10.1016/j.anifeedsci.2015.06.026 Development of best management strategies for the commercial deployment of cleaner fish in salmon farms http://hdl.handle.net/1893/22389 doi:10.1016/j.anifeedsci.2015.06.026 WOS:000361850100010 2-s2.0-84936792309 590758 http://dspace.stir.ac.uk/bitstream/1893/22389/1/RevisedMS-ANIFEE%20-15-6195-R3-UNMARKED%20%281%29.pdf |
op_rights |
This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Leclercq E, Graham P & Migaud H (2015) Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens, Animal Feed Science and Technology, 208, pp. 98-106. DOI:10.1016/j.anifeedsci.2015.06.026 © 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ 2016-10-01 [RevisedMS-ANIFEE -15-6195-R3-UNMARKED (1).pdf] Publisher requires embargo of 12 months after formal publication. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.anifeedsci.2015.06.026 |
container_title |
Animal Feed Science and Technology |
container_volume |
208 |
container_start_page |
98 |
op_container_end_page |
106 |
_version_ |
1766363461656248320 |
spelling |
ftunivstirling:oai:dspace.stir.ac.uk:1893/22389 2023-05-15T15:32:59+02:00 Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens Leclercq, Eric Graham, Philip Migaud, Herve J Sainsbury plc Institute of Aquaculture University of Stirling orcid:0000-0002-5404-7512 2015-10 application/pdf http://hdl.handle.net/1893/22389 https://doi.org/10.1016/j.anifeedsci.2015.06.026 http://dspace.stir.ac.uk/bitstream/1893/22389/1/RevisedMS-ANIFEE%20-15-6195-R3-UNMARKED%20%281%29.pdf en eng Elsevier Leclercq E, Graham P & Migaud H (2015) Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens. Animal Feed Science and Technology, 208, pp. 98-106. https://doi.org/10.1016/j.anifeedsci.2015.06.026 Development of best management strategies for the commercial deployment of cleaner fish in salmon farms http://hdl.handle.net/1893/22389 doi:10.1016/j.anifeedsci.2015.06.026 WOS:000361850100010 2-s2.0-84936792309 590758 http://dspace.stir.ac.uk/bitstream/1893/22389/1/RevisedMS-ANIFEE%20-15-6195-R3-UNMARKED%20%281%29.pdf This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Leclercq E, Graham P & Migaud H (2015) Development of a water-stable agar-based diet for the supplementary feeding of cleaner fish ballan wrasse (Labrus bergylta) deployed within commercial Atlantic salmon (Salmon salar) net-pens, Animal Feed Science and Technology, 208, pp. 98-106. DOI:10.1016/j.anifeedsci.2015.06.026 © 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ 2016-10-01 [RevisedMS-ANIFEE -15-6195-R3-UNMARKED (1).pdf] Publisher requires embargo of 12 months after formal publication. CC-BY-NC-ND Agar Biological control Binder Palatability Supplementary feeding Water stability Journal Article AM - Accepted Manuscript 2015 ftunivstirling https://doi.org/10.1016/j.anifeedsci.2015.06.026 2022-06-13T18:43:15Z The aim of this project was to develop a water-stable and palatable diet for the supplementary feeding of wrasse deployed in salmon sea-pens using a gelling agent mixed with a manufactured dry-feed component. Three binders (gelatine from cold water fish skin, beef gelatin and agar-agar) were compared for water-gel strength over a range of concentrations. Gel formed using agar was found to be significantly stronger than the other binders tested. An experimental aqua-feed made using a grinded, dry ingredient mix binded with 20g/L agar solution at 1/1.6 (w/v) ratio and offered as blocks within individual feeders was water-stable for 7 days when deployed fresh or following a week of preservation at -20°C. Farmed ballan wrasse in tanks fed on the agar-based diet within 2 days of deployment. Wild wrasse stocked in salmon sea-pens at low density (1.2-2.1%), up to 4 weeks prior the start of the trial and not previously fed a manufactured diet first ingested the agar feed within 2 weeks and total feed intake significantly increased afterwards. Feed intake was significantly higher from feeders placed within a small feeding shelter made of artificial kelp than within the large wrasse shelter. No nutrient leaching after water immersion and no alterations in the fatty acid profile after preparation of the experimental feed was found. A manufactured grinded ingredient mix binded with 20g/L agar solution at a 1/1.6 (w/v) ratio and offered within static feeders is proposed as the basis of a novel supplementary feeding methodology for cleaner fish wrasse deployed in salmon sea-pens. This methodology has the potential to facilitate wrasse feeding and to allow the monitoring of feed intake to safeguard the health, welfare and delousing activity of the biological stock over the salmon rearing cycle. Article in Journal/Newspaper Atlantic salmon University of Stirling: Stirling Digital Research Repository Ballan ENVELOPE(12.203,12.203,65.945,65.945) Animal Feed Science and Technology 208 98 106 |