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Fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for European sea bass (Dicentrarchus labrax)

Single-cell ingredients (SCI) are considered promising nutrient sources which are produced using environmentally friendly biotechnological processes. The aim of the current study was to evaluate the replacement of fishmeal, plant protein sources, and fish oil with SCI in organic feeds for European s...

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Autores principales: Vasilaki, A., Mente, E., Fountoulaki, E., Henry, M., Nikoloudaki, C., Berillis, P., Kousoulaki, K., Nengas, I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10225740/
https://www.ncbi.nlm.nih.gov/pubmed/37256067
http://dx.doi.org/10.3389/fphys.2023.1199497
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author Vasilaki, A.
Mente, E.
Fountoulaki, E.
Henry, M.
Nikoloudaki, C.
Berillis, P.
Kousoulaki, K.
Nengas, I.
author_facet Vasilaki, A.
Mente, E.
Fountoulaki, E.
Henry, M.
Nikoloudaki, C.
Berillis, P.
Kousoulaki, K.
Nengas, I.
author_sort Vasilaki, A.
collection PubMed
description Single-cell ingredients (SCI) are considered promising nutrient sources which are produced using environmentally friendly biotechnological processes. The aim of the current study was to evaluate the replacement of fishmeal, plant protein sources, and fish oil with SCI in organic feeds for European sea bass (Dicentrarchus labrax). Bacterial protein, yeast protein, and microalgae were used to replace fishmeal trimmings, soya bean meal, and fish oil from trimmings. Triplicate groups (30 fish per replicate) of European sea bass (14.4 ± 2.4 g) were fed the experimental diets for 71 days. The results showed that the incorporation of SCI at all levels of inclusion significantly enhanced nutrient digestibility. Additionally, growth performance parameters were not affected by SCI inclusion, exhibiting similar or improved values. Moreover, a tendency for improved anterior and posterior gut structure was observed and a significant increase of lysozyme activity at the two highest inclusion levels of SCI was determined. Overall, the results showed that the inclusion of SCI at 15% (bacterial: yeast: algae—9.4: 4.7: 1) is possible without compromising any of the parameters evaluated. According to these findings, a higher substitution of fishmeal trimmings, plant protein sources, and fish oil from trimmings with SCI in organic diets for European sea bass (D. labrax) can be further evaluated in future studies.
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spelling pubmed-102257402023-05-30 Fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for European sea bass (Dicentrarchus labrax) Vasilaki, A. Mente, E. Fountoulaki, E. Henry, M. Nikoloudaki, C. Berillis, P. Kousoulaki, K. Nengas, I. Front Physiol Physiology Single-cell ingredients (SCI) are considered promising nutrient sources which are produced using environmentally friendly biotechnological processes. The aim of the current study was to evaluate the replacement of fishmeal, plant protein sources, and fish oil with SCI in organic feeds for European sea bass (Dicentrarchus labrax). Bacterial protein, yeast protein, and microalgae were used to replace fishmeal trimmings, soya bean meal, and fish oil from trimmings. Triplicate groups (30 fish per replicate) of European sea bass (14.4 ± 2.4 g) were fed the experimental diets for 71 days. The results showed that the incorporation of SCI at all levels of inclusion significantly enhanced nutrient digestibility. Additionally, growth performance parameters were not affected by SCI inclusion, exhibiting similar or improved values. Moreover, a tendency for improved anterior and posterior gut structure was observed and a significant increase of lysozyme activity at the two highest inclusion levels of SCI was determined. Overall, the results showed that the inclusion of SCI at 15% (bacterial: yeast: algae—9.4: 4.7: 1) is possible without compromising any of the parameters evaluated. According to these findings, a higher substitution of fishmeal trimmings, plant protein sources, and fish oil from trimmings with SCI in organic diets for European sea bass (D. labrax) can be further evaluated in future studies. Frontiers Media S.A. 2023-05-15 /pmc/articles/PMC10225740/ /pubmed/37256067 http://dx.doi.org/10.3389/fphys.2023.1199497 Text en Copyright © 2023 Vasilaki, Mente, Fountoulaki, Henry, Nikoloudaki, Berillis, Kousoulaki and Nengas. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Physiology
Vasilaki, A.
Mente, E.
Fountoulaki, E.
Henry, M.
Nikoloudaki, C.
Berillis, P.
Kousoulaki, K.
Nengas, I.
Fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for European sea bass (Dicentrarchus labrax)
title Fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for European sea bass (Dicentrarchus labrax)
title_full Fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for European sea bass (Dicentrarchus labrax)
title_fullStr Fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for European sea bass (Dicentrarchus labrax)
title_full_unstemmed Fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for European sea bass (Dicentrarchus labrax)
title_short Fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for European sea bass (Dicentrarchus labrax)
title_sort fishmeal, plant protein, and fish oil substitution with single-cell ingredients in organic feeds for european sea bass (dicentrarchus labrax)
topic Physiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10225740/
https://www.ncbi.nlm.nih.gov/pubmed/37256067
http://dx.doi.org/10.3389/fphys.2023.1199497
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