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Title: Gill Oxidative Stress Protection through the Use of Phytogenics and Galactomannan Oligosaccharides as Functional Additives in Practical Diets for European Sea Bass (Dicentrarchus labrax) Juveniles
Authors: Serradell Pastor, Antonio 
Montero Vítores, Daniel 
Montero Fernández, Álvaro
Terova, Genciana
Makol, Alex
Valdenegro, Victoria
Acosta Arbelo, Félix Antonio 
Izquierdo López, Marisol 
Torrecillas Burriel,Silvia 
UNESCO Clasification: 310502 Piscicultura
310406 Nutrición
Keywords: European sea bass
Functional diets
Gill relative gene expression
Low-FM/FO diets, et al
Issue Date: 2022
Project: ROINMUNOIL PLUS (AGL2016-79725-P) project “Functional diets for marine raw materials replacement: boosting the fish disease resistance through epithelial barriers reinforcement and immunization tools.”
Journal: Animals 
Abstract: The aim of the present study is to evaluate the potential of two functional additives as gill endogenous antioxidant capacity boosters in European sea-bass juveniles fed low-FM/FO diets when challenged against physical and biological stressors. For that purpose, two isoenergetic and isonitrogenous diets with low FM (10%) and FO (6%) contents were supplemented with 5000 ppm plant-derived galactomannan–oligosaccharides (GMOS) or 200 ppm of a mixture of garlic and labiate plant essential oils (PHYTO). A control diet was void from supplementation. Fish were fed the experimental diet for nine weeks and subjected to a confinement stress challenge (C challenge) or a confinement stress challenge combined with an exposure to the pathogen Vibrio anguillarum (CI challenge). Both GMOS and PHYTO diets attenuated fish stress response, inducing lower circulating plasma cortisol and down-regulating nfkβ2 and gr relative gene-expression levels in the gill. This attenuated stress response was associated with a minor energetic metabolism response in relation to the down-regulation of nd5 and coxi gene expression.
ISSN: 2076-2615
DOI: 10.3390/ani12233332
Source: Animals [ISSN 2076-2615], v. 12(23)
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