Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta)
The expansion of ballan wrasse farming, used as a biological control against sea lice in Atlantic salmon, is constrained by the slow growth rate in the species and extended period required to reach deployment size. Rearing temperature and diets are the two main growth limiting factors in fish. In th...
Published in: | Aquaculture |
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Main Authors: | , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2019
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Online Access: | http://hdl.handle.net/1893/30026 https://doi.org/10.1016/j.aquaculture.2019.734237 http://dspace.stir.ac.uk/bitstream/1893/30026/1/Wrasse%20temp%20trial%20v9%20TCR_2_.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/30026 |
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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 |
Ballan wrasse Cleaner fish Digestibility Nutrition Recirculating aquaculture system Temperature |
spellingShingle |
Ballan wrasse Cleaner fish Digestibility Nutrition Recirculating aquaculture system Temperature Cavrois-Rogacki, Thomas Davie, Andrew Monroig, Oscar Migaud, Hervé Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta) |
topic_facet |
Ballan wrasse Cleaner fish Digestibility Nutrition Recirculating aquaculture system Temperature |
description |
The expansion of ballan wrasse farming, used as a biological control against sea lice in Atlantic salmon, is constrained by the slow growth rate in the species and extended period required to reach deployment size. Rearing temperature and diets are the two main growth limiting factors in fish. In this study, farmed ballan wrasse juveniles were reared at 10, 13 and 16 °C over a period of 3 months and fed two different commercial diets commonly used in marine finfish, Otohime S2 and BioMar Symbio. At the end of the trial, fish growth was +125, +75 and + 25% compared to their initial weight in 16, 13 and 10 °C treatments, respectively. It was suggested that temperatures above 16 °C may promote growth even further. Furthermore, feed conversion ratio was significantly improved in fish reared at 16 °C. However, diets did not impact on any of the growth performance indicators although a significantly higher daily feed intake was observed in fish fed BioMar Symbio. Importantly, no significant effects of temperature and diets on mortality and condition factor were observed. No differences were found in the fish (whole-body) macronutrient composition between diets. Analysis of the protein, lipid and energy digestibility revealed lower apparent digestibility coefficients than normally observed in marine species, suggesting the diet formulation is not optimised for the species. Finally, fish reared at 10 °C showed increased hepatosomatic index, suggesting fat storage in the liver under cold temperatures. These results showed that the production cycle could be shortened by >4 months in fish reared at 16 °C. This could contribute to increase hatchery productivity and meet demand from the salmon production sector while reducing costs associated with the nursery phase although maintaining a constant high temperature would increase operational costs. |
author2 |
Scottish Aquaculture Innovation Centre Institute of Aquaculture orcid:0000-0002-9524-618X orcid:0000-0001-8712-0440 orcid:0000-0002-5404-7512 |
format |
Article in Journal/Newspaper |
author |
Cavrois-Rogacki, Thomas Davie, Andrew Monroig, Oscar Migaud, Hervé |
author_facet |
Cavrois-Rogacki, Thomas Davie, Andrew Monroig, Oscar Migaud, Hervé |
author_sort |
Cavrois-Rogacki, Thomas |
title |
Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta) |
title_short |
Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta) |
title_full |
Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta) |
title_fullStr |
Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta) |
title_full_unstemmed |
Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta) |
title_sort |
elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (labrus bergylta) |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://hdl.handle.net/1893/30026 https://doi.org/10.1016/j.aquaculture.2019.734237 http://dspace.stir.ac.uk/bitstream/1893/30026/1/Wrasse%20temp%20trial%20v9%20TCR_2_.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 |
Cavrois-Rogacki T, Davie A, Monroig O & Migaud H (2019) Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta). Aquaculture, 511, Art. No.: 734237. https://doi.org/10.1016/j.aquaculture.2019.734237 734237 http://hdl.handle.net/1893/30026 doi:10.1016/j.aquaculture.2019.734237 WOS:000480233600037 2-s2.0-85067556976 1399742 http://dspace.stir.ac.uk/bitstream/1893/30026/1/Wrasse%20temp%20trial%20v9%20TCR_2_.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: Cavrois-Rogacki T, Davie A, Monroig O & Migaud H (2019) Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta). Aquaculture, 511, Art. No.: 734237. DOI: https://doi.org/10.1016/j.aquaculture.2019.734237 © 2019, 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/ 2020-06-20 [Wrasse temp trial v9 TCR_2_.pdf] Publisher requires embargo of 12 months after formal publication. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.aquaculture.2019.734237 |
container_title |
Aquaculture |
container_volume |
511 |
container_start_page |
734237 |
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1766363395079012352 |
spelling |
ftunivstirling:oai:dspace.stir.ac.uk:1893/30026 2023-05-15T15:32:55+02:00 Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta) Cavrois-Rogacki, Thomas Davie, Andrew Monroig, Oscar Migaud, Hervé Scottish Aquaculture Innovation Centre Institute of Aquaculture orcid:0000-0002-9524-618X orcid:0000-0001-8712-0440 orcid:0000-0002-5404-7512 2019-09-15 application/pdf http://hdl.handle.net/1893/30026 https://doi.org/10.1016/j.aquaculture.2019.734237 http://dspace.stir.ac.uk/bitstream/1893/30026/1/Wrasse%20temp%20trial%20v9%20TCR_2_.pdf en eng Elsevier Cavrois-Rogacki T, Davie A, Monroig O & Migaud H (2019) Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta). Aquaculture, 511, Art. No.: 734237. https://doi.org/10.1016/j.aquaculture.2019.734237 734237 http://hdl.handle.net/1893/30026 doi:10.1016/j.aquaculture.2019.734237 WOS:000480233600037 2-s2.0-85067556976 1399742 http://dspace.stir.ac.uk/bitstream/1893/30026/1/Wrasse%20temp%20trial%20v9%20TCR_2_.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: Cavrois-Rogacki T, Davie A, Monroig O & Migaud H (2019) Elevated temperature promotes growth and feed efficiency of farmed ballan wrasse juveniles (Labrus bergylta). Aquaculture, 511, Art. No.: 734237. DOI: https://doi.org/10.1016/j.aquaculture.2019.734237 © 2019, 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/ 2020-06-20 [Wrasse temp trial v9 TCR_2_.pdf] Publisher requires embargo of 12 months after formal publication. CC-BY-NC-ND Ballan wrasse Cleaner fish Digestibility Nutrition Recirculating aquaculture system Temperature Journal Article AM - Accepted Manuscript 2019 ftunivstirling https://doi.org/10.1016/j.aquaculture.2019.734237 2022-06-13T18:43:35Z The expansion of ballan wrasse farming, used as a biological control against sea lice in Atlantic salmon, is constrained by the slow growth rate in the species and extended period required to reach deployment size. Rearing temperature and diets are the two main growth limiting factors in fish. In this study, farmed ballan wrasse juveniles were reared at 10, 13 and 16 °C over a period of 3 months and fed two different commercial diets commonly used in marine finfish, Otohime S2 and BioMar Symbio. At the end of the trial, fish growth was +125, +75 and + 25% compared to their initial weight in 16, 13 and 10 °C treatments, respectively. It was suggested that temperatures above 16 °C may promote growth even further. Furthermore, feed conversion ratio was significantly improved in fish reared at 16 °C. However, diets did not impact on any of the growth performance indicators although a significantly higher daily feed intake was observed in fish fed BioMar Symbio. Importantly, no significant effects of temperature and diets on mortality and condition factor were observed. No differences were found in the fish (whole-body) macronutrient composition between diets. Analysis of the protein, lipid and energy digestibility revealed lower apparent digestibility coefficients than normally observed in marine species, suggesting the diet formulation is not optimised for the species. Finally, fish reared at 10 °C showed increased hepatosomatic index, suggesting fat storage in the liver under cold temperatures. These results showed that the production cycle could be shortened by >4 months in fish reared at 16 °C. This could contribute to increase hatchery productivity and meet demand from the salmon production sector while reducing costs associated with the nursery phase although maintaining a constant high temperature would increase operational costs. Article in Journal/Newspaper Atlantic salmon University of Stirling: Stirling Digital Research Repository Ballan ENVELOPE(12.203,12.203,65.945,65.945) Aquaculture 511 734237 |