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Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L

Carol Gutierrez-Rabadan, C. Spreadbury, Sofia Consuegra del Olmo Orcid Logo, Carlos Garcia De Leaniz Orcid Logo

Aquaculture, Volume: 531, Start page: 735777

Swansea University Authors: Carol Gutierrez-Rabadan, Sofia Consuegra del Olmo Orcid Logo, Carlos Garcia De Leaniz Orcid Logo

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DOI (Published version): 10.1016/j.aquaculture.2020.735777

Abstract

Lumpfish (Cyclopterus lumpus L.) are widely used for controlling sea lice in salmon farming, but their welfare is often challenged by poor husbandry, stress, and disease outbreaks, which compromise their ability to delouse salmon and cause public concern. It is hence important to identify when the w...

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Published in: Aquaculture
ISSN: 0044-8486
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa55367
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It is hence important to identify when the welfare of lumpfish is being compromised in a simple and effective manner so that remedial actions can be taken. We developed, validated and tested a Lumpfish Operational Welfare Score Index (LOWSI) based on a visual assessment of skin and fin damage, eye condition, sucker deformities and relative weight, operational welfare indicators that fish farmers considered to be the most informative and were validated against cortisol measurements. We also present percentile length-weight charts to enable fish farmers to detect underweight and emaciated lumpfish at different stages of development. The lumpish welfare score index was quick and easy to score and was highly repeatable (intra class correlation coefficient&#x202F;=&#x202F;0.83&#x202F;&#xB1;&#x202F;0.05). Most lumpfish (71%) displayed good welfare, but significant differences were found between six commercial sites and 28% of lumpfish had lower than normal weights for their length, and 10% were emaciated. The most common welfare problems were sucker deformities and fin damage in hatcheries, and poor eye condition and body damage in sea cages, conditions that may increase the risk of emaciation. 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spelling 2022-10-10T10:27:50.9580846 v2 55367 2020-10-08 Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L 910b0480e39b84709ef941911f11e40e Carol Gutierrez-Rabadan Carol Gutierrez-Rabadan true false 241f2810ab8f56be53ca8af23e384c6e 0000-0003-4403-2509 Sofia Consuegra del Olmo Sofia Consuegra del Olmo true false 1c70acd0fd64edb0856b7cf34393ab02 0000-0003-1650-2729 Carlos Garcia De Leaniz Carlos Garcia De Leaniz true false 2020-10-08 SBI Lumpfish (Cyclopterus lumpus L.) are widely used for controlling sea lice in salmon farming, but their welfare is often challenged by poor husbandry, stress, and disease outbreaks, which compromise their ability to delouse salmon and cause public concern. It is hence important to identify when the welfare of lumpfish is being compromised in a simple and effective manner so that remedial actions can be taken. We developed, validated and tested a Lumpfish Operational Welfare Score Index (LOWSI) based on a visual assessment of skin and fin damage, eye condition, sucker deformities and relative weight, operational welfare indicators that fish farmers considered to be the most informative and were validated against cortisol measurements. We also present percentile length-weight charts to enable fish farmers to detect underweight and emaciated lumpfish at different stages of development. The lumpish welfare score index was quick and easy to score and was highly repeatable (intra class correlation coefficient = 0.83 ± 0.05). Most lumpfish (71%) displayed good welfare, but significant differences were found between six commercial sites and 28% of lumpfish had lower than normal weights for their length, and 10% were emaciated. The most common welfare problems were sucker deformities and fin damage in hatcheries, and poor eye condition and body damage in sea cages, conditions that may increase the risk of emaciation. Being able to score the welfare of lumpfish quickly and accurately will help improve their welfare, reduce stress-related mortalities, and improve the sustainability of the salmon farming industry. Journal Article Aquaculture 531 735777 Elsevier BV 0044-8486 OWI; Relative weight; Salmon farming; Cleaner fish; Welfare indicators 30 1 2021 2021-01-30 10.1016/j.aquaculture.2020.735777 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University SU College/Department paid the OA fee Funding for this research was provided by a Knowledge Economy Skills Scholarship (KESS-II) to CGR in collaboration with Ocean Matters Ltd., and the ERDF SMARTAQUA Operation. 2022-10-10T10:27:50.9580846 2020-10-08T07:33:33.9705176 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Carol Gutierrez-Rabadan 1 C. Spreadbury 2 Sofia Consuegra del Olmo 0000-0003-4403-2509 3 Carlos Garcia De Leaniz 0000-0003-1650-2729 4 55367__18736__7f112a2b60c94c3dbe11c5c4f58e739a.pdf 55367.pdf 2020-11-24T14:23:34.0819277 Output 4257888 application/pdf Version of Record true © 2020 The Authors. This is an open access article under the CC BY-NC-ND license true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L
spellingShingle Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L
Carol Gutierrez-Rabadan
Sofia Consuegra del Olmo
Carlos Garcia De Leaniz
title_short Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L
title_full Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L
title_fullStr Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L
title_full_unstemmed Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L
title_sort Development, validation and testing of an Operational Welfare Score Index for farmed lumpfish Cyclopterus lumpus L
author_id_str_mv 910b0480e39b84709ef941911f11e40e
241f2810ab8f56be53ca8af23e384c6e
1c70acd0fd64edb0856b7cf34393ab02
author_id_fullname_str_mv 910b0480e39b84709ef941911f11e40e_***_Carol Gutierrez-Rabadan
241f2810ab8f56be53ca8af23e384c6e_***_Sofia Consuegra del Olmo
1c70acd0fd64edb0856b7cf34393ab02_***_Carlos Garcia De Leaniz
author Carol Gutierrez-Rabadan
Sofia Consuegra del Olmo
Carlos Garcia De Leaniz
author2 Carol Gutierrez-Rabadan
C. Spreadbury
Sofia Consuegra del Olmo
Carlos Garcia De Leaniz
format Journal article
container_title Aquaculture
container_volume 531
container_start_page 735777
publishDate 2021
institution Swansea University
issn 0044-8486
doi_str_mv 10.1016/j.aquaculture.2020.735777
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
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description Lumpfish (Cyclopterus lumpus L.) are widely used for controlling sea lice in salmon farming, but their welfare is often challenged by poor husbandry, stress, and disease outbreaks, which compromise their ability to delouse salmon and cause public concern. It is hence important to identify when the welfare of lumpfish is being compromised in a simple and effective manner so that remedial actions can be taken. We developed, validated and tested a Lumpfish Operational Welfare Score Index (LOWSI) based on a visual assessment of skin and fin damage, eye condition, sucker deformities and relative weight, operational welfare indicators that fish farmers considered to be the most informative and were validated against cortisol measurements. We also present percentile length-weight charts to enable fish farmers to detect underweight and emaciated lumpfish at different stages of development. The lumpish welfare score index was quick and easy to score and was highly repeatable (intra class correlation coefficient = 0.83 ± 0.05). Most lumpfish (71%) displayed good welfare, but significant differences were found between six commercial sites and 28% of lumpfish had lower than normal weights for their length, and 10% were emaciated. The most common welfare problems were sucker deformities and fin damage in hatcheries, and poor eye condition and body damage in sea cages, conditions that may increase the risk of emaciation. Being able to score the welfare of lumpfish quickly and accurately will help improve their welfare, reduce stress-related mortalities, and improve the sustainability of the salmon farming industry.
published_date 2021-01-30T04:09:31Z
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score 11.013731

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