Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)

Trevi, Sergio; Webster, Tamsyn Uren; del, Sofia Consuegra; De, Carlos Garcia

doi:10.1002/aff2.164

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Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)

Sergio Trevi, Tamsyn Uren Webster

, Sofia Consuegra del Olmo

, Carlos Garcia De Leaniz

Aquaculture, Fish and Fisheries, Volume: 4, Issue: 3

Swansea University Authors: Sergio Trevi, Tamsyn Uren Webster , Sofia Consuegra del Olmo , Carlos Garcia De Leaniz

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DOI (Published version): 10.1002/aff2.164

Abstract

Microalgae offer a sustainable source of omega − 3 fatty acids that can replace fish oil in aquafeeds, but the nutritional benefits are not always clear, particularly when microalgae are used as complete oil replacements in starter feeds. We compared the survival, growth, omega − 3 deposition and co...

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Published in:	Aquaculture, Fish and Fisheries
ISSN:	2693-8847 2693-8847
Published:	Wiley 2024
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa66569
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We compared the survival, growth, omega − 3 deposition and composition of the gut microbiota of juvenile mixed-sex Nile tilapia (Oreochromis niloticus) that had been fed over a 3-month period on six isonitrogenous, isolipidic and isocaloric aquafeeds that varied only on the contribution of fish oil, soya oil and microalgae (Schizochytrium) oil as lipid sources. Survival was not affected by diet, but fish fed a diet where the entire oil component (5%) was replaced by microalgae oil grew twice as fast as fish fed plant oil or a mixture of plant and fish oil. Dietary omega − 3 content was strongly correlated with omega − 3 deposition in the fish fillet. Complete replacement of fish oil by plant oil caused a significant decrease in the abundance of Peptostreptococcaceae and an increase in the abundance of Aeromonadaceae which is often associated with an inflammatory response in the fish gut. In contrast, when fish and soya oil in the reference diet were replaced by 100% microalgae oil, an increase in Mycobacteriaceae was observed. 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spelling	v2 66569 2024-06-03 Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>) aaed147903dd0f65ddf0de01dd2a0729 Sergio Trevi Sergio Trevi true false 3ea91c154926c86f89ea6a761122ecf6 0000-0002-0072-9745 Tamsyn Uren Webster Tamsyn Uren Webster 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 2024-06-03 BGPS Microalgae offer a sustainable source of omega − 3 fatty acids that can replace fish oil in aquafeeds, but the nutritional benefits are not always clear, particularly when microalgae are used as complete oil replacements in starter feeds. We compared the survival, growth, omega − 3 deposition and composition of the gut microbiota of juvenile mixed-sex Nile tilapia (Oreochromis niloticus) that had been fed over a 3-month period on six isonitrogenous, isolipidic and isocaloric aquafeeds that varied only on the contribution of fish oil, soya oil and microalgae (Schizochytrium) oil as lipid sources. Survival was not affected by diet, but fish fed a diet where the entire oil component (5%) was replaced by microalgae oil grew twice as fast as fish fed plant oil or a mixture of plant and fish oil. Dietary omega − 3 content was strongly correlated with omega − 3 deposition in the fish fillet. Complete replacement of fish oil by plant oil caused a significant decrease in the abundance of Peptostreptococcaceae and an increase in the abundance of Aeromonadaceae which is often associated with an inflammatory response in the fish gut. In contrast, when fish and soya oil in the reference diet were replaced by 100% microalgae oil, an increase in Mycobacteriaceae was observed. Our study indicates that Schizochytrium oil can be used to improve the growth of Nile tilapia and increase its omega − 3 content without any of the detrimental effects on the gut microbiome typically associated with some plant oil replacements. Journal Article Aquaculture, Fish and Fisheries 4 3 Wiley 2693-8847 2693-8847 algae; aquaculture; feed; growth; tilapia 1 6 2024 2024-06-01 10.1002/aff2.164 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University SU Library paid the OA fee (TA Institutional Deal) Swansea University PhD scholarship. Grant Number: SMARTAQUA 2024-06-03T11:20:51.0018569 2024-06-03T11:10:52.0808049 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Sergio Trevi 1 Tamsyn Uren Webster 0000-0002-0072-9745 2 Sofia Consuegra del Olmo 0000-0003-4403-2509 3 Carlos Garcia De Leaniz 0000-0003-1650-2729 4 66569__30518__543f8b820a1e4f1eb77c77e987bdfc43.pdf 66569_VoR.pdf 2024-06-03T11:13:06.3755604 Output 2792741 application/pdf Version of Record true © 2024 The Authors. This is an open access article under the terms of the Creative Commons Attribution License. true eng http://creativecommons.org/licenses/by/4.0/
title	Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)
spellingShingle	Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>) Sergio Trevi Tamsyn Uren Webster Sofia Consuegra del Olmo Carlos Garcia De Leaniz
title_short	Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)
title_full	Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)
title_fullStr	Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)
title_full_unstemmed	Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)
title_sort	Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)
author_id_str_mv	aaed147903dd0f65ddf0de01dd2a0729 3ea91c154926c86f89ea6a761122ecf6 241f2810ab8f56be53ca8af23e384c6e 1c70acd0fd64edb0856b7cf34393ab02
author_id_fullname_str_mv	aaed147903dd0f65ddf0de01dd2a0729_*_Sergio Trevi 3ea91c154926c86f89ea6a761122ecf6__Tamsyn Uren Webster 241f2810ab8f56be53ca8af23e384c6e__Sofia Consuegra del Olmo 1c70acd0fd64edb0856b7cf34393ab02_*_Carlos Garcia De Leaniz
author	Sergio Trevi Tamsyn Uren Webster Sofia Consuegra del Olmo Carlos Garcia De Leaniz
author2	Sergio Trevi Tamsyn Uren Webster Sofia Consuegra del Olmo Carlos Garcia De Leaniz
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container_title	Aquaculture, Fish and Fisheries
container_volume	4
container_issue	3
publishDate	2024
institution	Swansea University
issn	2693-8847 2693-8847
doi_str_mv	10.1002/aff2.164
publisher	Wiley
college_str	Faculty of Science and Engineering
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department_str	School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
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description	Microalgae offer a sustainable source of omega − 3 fatty acids that can replace fish oil in aquafeeds, but the nutritional benefits are not always clear, particularly when microalgae are used as complete oil replacements in starter feeds. We compared the survival, growth, omega − 3 deposition and composition of the gut microbiota of juvenile mixed-sex Nile tilapia (Oreochromis niloticus) that had been fed over a 3-month period on six isonitrogenous, isolipidic and isocaloric aquafeeds that varied only on the contribution of fish oil, soya oil and microalgae (Schizochytrium) oil as lipid sources. Survival was not affected by diet, but fish fed a diet where the entire oil component (5%) was replaced by microalgae oil grew twice as fast as fish fed plant oil or a mixture of plant and fish oil. Dietary omega − 3 content was strongly correlated with omega − 3 deposition in the fish fillet. Complete replacement of fish oil by plant oil caused a significant decrease in the abundance of Peptostreptococcaceae and an increase in the abundance of Aeromonadaceae which is often associated with an inflammatory response in the fish gut. In contrast, when fish and soya oil in the reference diet were replaced by 100% microalgae oil, an increase in Mycobacteriaceae was observed. Our study indicates that Schizochytrium oil can be used to improve the growth of Nile tilapia and increase its omega − 3 content without any of the detrimental effects on the gut microbiome typically associated with some plant oil replacements.
published_date	2024-06-01T11:20:50Z
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Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (<i>Oreochromis niloticus</i>)

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