Inclusion of a protein-rich yeast fraction in rainbow trout plant-based diet: Consequences on growth performances, flesh fatty acid profile and health-related parameters

Richard, Nadège; Costas, Benjamín; Machado, Marina Guimarães Carvalho; Fernández-Boo, Sergio; Girons, Albert; Dias, Jorge; Corraze, Généviève; Terrier, Frédéric; Marchand, Yann; Skiba‐Cassy, Sandrine

doi:10.1016/j.aquaculture.2021.737132

Cited by 16 publications

(7 citation statements)

References 60 publications

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“…Claudins are particularly involved in regulating the absorption of intestinal fluids in salmonids (Sundell & Sundh, 2012), as indicated by the increase in claudin 15 and 25 expression in the intestine during the transition to seawater (Tipsmark et al, 2010). Adding 20% torula yeast to the PB diet in the present study increased the expression of claudin 15 in rainbow trout, as previously observed in the same species for another yeast extract ( Saccharomyces cerevisiae ) (Richard et al, 2021). This suggests that yeast broadly is a functional ingredient that can improve the robustness and growth of fish by creating a stronger epithelial barrier.…”

Section: Discussionsupporting

confidence: 89%

“…As such, expression of mucin in the gut of common carp ( Cyprinus carpio ) and gilthead bream decreases when infection is present (Adamek et al, 2017; Pérez‐Sánchez et al, 2013). Adding a protein‐rich yeast fraction of S. cerevisiae to fish diets can influence the expression of mucins (Richard et al, 2021), but this did not occur with torula yeast in the present study. Thus, an increase in mucin secretion was not the main reason that torula yeast increased the growth of rainbow trout.…”

Section: Discussioncontrasting

confidence: 68%

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Partially replacing plant protein sources with torula yeast in rainbow trout (Oncorhynchus mykiss) feed increases growth and factors related to immune status

Ekmay,

Plagnes‐Juan,

Aguirre

et al. 2024

J World Aquaculture Soc

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In this study, the impact of adding 10% or 20% torula yeast (PB TY10 and PB TY20) to a fishmeal‐free diet on digestibility and growth of juvenile rainbow trout was assessed. The yeast diets were compared with a plant‐only diet (PB) and a diet containing 20% fishmeal (FM). The apparent digestibility of dry matter, protein, energy, and ash of yeast in trout (~120 g) were 78.6%, 93.8%, 84.8%, and 48.7%, respectively. All PB diets had higher protein digestibility and PB TY20 had higher ash digestibility than the FM diet. To assess growth, trout (~44 g) were divided into triplicate tanks (30 per tank) and fed one of the four experimental diets for 12 weeks. The PB diet resulted in lower growth and daily feed intake (p < 0.05), but adding yeast significantly improved them. Final weight of PB TY10 did not differ significantly from that of FM. Expression of oclna and cldn15 in the proximal intestine increased in trout fed yeast (p < 0.05). Expression of tlr2, mcsfr, and tnfa, as well as the plasma lysozyme concentration, increased with PB TY20 (p < 0.05). In conclusion, torula yeast has the potential to improve the robustness and growth of rainbow trout in the context of fishmeal‐free diets.

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Section: Discussionsupporting

confidence: 89%

Section: Discussioncontrasting

confidence: 68%

Partially replacing plant protein sources with torula yeast in rainbow trout (Oncorhynchus mykiss) feed increases growth and factors related to immune status

Ekmay,

Plagnes‐Juan,

Aguirre

et al. 2024

J World Aquaculture Soc

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“…DHA-rich microalgae were not included in the ECO-diet either. Even though their ability to replace the DHA provided by fish oil has been clearly demonstrated for rainbow trout (Richard et al, 2021), their high price automatically excludes them from lower-cost formulations.…”

Section: Consequences Of Mo Formulation On the Composition And Enviro...mentioning

confidence: 99%

A step towards sustainable aquaculture: Multiobjective feed formulation reduces environmental impacts at feed and farm levels for rainbow trout

et al. 2023

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“…Oppositely, the yeast S. cerevisiae had no functional effects in Atlantic salmon diets [60]. However, in rainbow trout, the inclusion of a protein-rich yeast fraction (from S. cerevisiae) in plant protein diets, totally devoid of fishmeal, resulted in a larger fish internal intestinal surface area, which contributed to an enhanced nutrient absorption capacity [62]. Furthermore, while rainbow trout that were fed the 100% plant protein diet showed signs of moderate enteritis in the distal intestine, this inflammation was gradually alleviated with increasing incorporation of the yeast fraction in the diet (up to 15% of inclusion).…”

Section: Impacts Of Alternative Protein Sources On Fish Intestinal An...mentioning

confidence: 99%

Alternative Proteins for Fish Diets: Implications beyond Growth

Aragão

Gonçalves

Costas

et al. 2022

Animals

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Aquaculture has been challenged to find alternative ingredients to develop innovative feed formulations that foster a sustainable future growth. Given the most recent trends in fish feed formulation on the use of alternative protein sources to decrease the dependency of fishmeal, it is fundamental to evaluate the implications of this new paradigm for fish health and welfare. This work intends to comprehensively review the impacts of alternative and novel dietary protein sources on fish gut microbiota and health, stress and immune responses, disease resistance, and antioxidant capacity. The research results indicate that alternative protein sources, such as terrestrial plant proteins, rendered animal by-products, insect meals, micro- and macroalgae, and single cell proteins (e.g., yeasts), may negatively impact gut microbiota and health, thus affecting immune and stress responses. Nevertheless, some of the novel protein sources, such as insects and algae meals, have functional properties and may exert an immunostimulatory activity. Further research on the effects of novel protein sources, beyond growth, is clearly needed. The information gathered here is of utmost importance, in order to develop innovative diets that guarantee the production of healthy fish with high quality standards and optimised welfare conditions, thus contributing to a sustainable growth of the aquaculture industry.

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Inclusion of a protein-rich yeast fraction in rainbow trout plant-based diet: Consequences on growth performances, flesh fatty acid profile and health-related parameters

Cited by 16 publications

References 60 publications

Partially replacing plant protein sources with torula yeast in rainbow trout (Oncorhynchus mykiss) feed increases growth and factors related to immune status

Partially replacing plant protein sources with torula yeast in rainbow trout (Oncorhynchus mykiss) feed increases growth and factors related to immune status

A step towards sustainable aquaculture: Multiobjective feed formulation reduces environmental impacts at feed and farm levels for rainbow trout

Alternative Proteins for Fish Diets: Implications beyond Growth

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