Partial replacement of dietary fish oil with blends of vegetable oils (rapeseed, linseed and palm oils) in diets for European sea bass (Dicentrarchus labrax L.) over a long term growth study: Effects on muscle and liver fatty acid composition and effectiveness of a fish oil finishing diet

2006 ◽  
Vol 145 (3-4) ◽  
pp. 389-399 ◽  
Author(s):  
G. Mourente ◽  
J.G. Bell
Keyword(s):  
Fatty Acid Composition ◽  
Fish Oil ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Partial Replacement ◽  
Liver Fatty Acid ◽  
Growth Study ◽  
European Sea Bass ◽  
Dietary Fish

scholarly journals Dietary fish oil and digestible protein modify susceptibility to lipid peroxidation in the muscle of rainbow trout (Oncorhynchus mykiss) and sea bass (Dicentrarchus labrax)

1998 ◽  
Vol 80 (3) ◽  
pp. 281-289 ◽  
Author(s):  
M. J. Alvarez ◽  
C. J. Lopez-Bote ◽  
A. Diez ◽  
G. Corraze ◽  
J. Arzel ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Rainbow Trout ◽  
Fish Oil ◽  
Dietary Fat ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
European Sea Bass ◽  
Dorsal Muscle ◽  
Dietary Fish ◽  
Digestible Protein

The effects of dietary fish oil and digestible protein (DP) levels on muscle fatty acid composition and susceptibility to lipid peroxidation were studied in two representative fish species for human nutrition, from fresh and seawater, rainbow trout (Oncorhynchus mykiss) and European sea bass (Dicentrarchus labrax). In rainbow trout, higher concentrations of dietary fat and DP led to higher weight gain (g/d) (P = 0.001 and P = 0.043 respectively). Additionally, an interaction effect was observed in this species, since the effect of DP was only evident when the dietary fat concentration was low (P = 0.043). A similar tendency was also observed in European sea bass, although with less marked differences among nutritional treatments. Trout fed on diets with a higher concentration of dietary fat had higher concentrations of intramuscular total and neutral lipids in the dorsal muscle (P = 0.005). Increased levels of dietary DP led to significantly lower concentrations of polar lipids in the dorsal muscle of both rainbow trout (P = 0.005) and European sea bass (P = 0.006). In the neutral fraction of intramuscular lipids of dorsal muscle the concentration of n-3 fatty acids was positively affected by the dietary fat concentration in both rainbow trout (P = 0.04) and sea bass (P = 0.001). Muscle homogenates from trout and sea bass fed on diets rich in fish oil showed a significantly higher susceptibility to oxidation than muscle homogenates from fish fed on low-fat diets (P = 0.001). The higher DP concentration also increased susceptibility to oxidation. Moreover, in rainbow trout an interaction effect was observed where the pro-oxidant effect was of higher magnitude when the dietary concentration of both nutrients, fat and protein, was high (P = 0.004).

scholarly journals Up-scaling validation of a dummy regression approach for predictive modelling the fillet fatty acid composition of cultured European sea bass (Dicentrarchus labrax)

2014 ◽  
Vol 47 (4) ◽  
pp. 1067-1074 ◽  
Author(s):  
Gabriel Fernando Ballester-Lozano ◽  
Laura Benedito-Palos ◽  
Mónica Mingarro ◽  
Juan Carlos Navarro ◽  
Jaume Pérez-Sánchez
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Predictive Modelling ◽  
European Sea Bass ◽  
Regression Approach ◽  
Up Scaling

scholarly journals Growth Performance and Adaptability of European Sea Bass (Dicentrarchus labrax) Gut Microbiota to Alternative Diets Free of Fish Products

2020 ◽  
Vol 8 (9) ◽  
pp. 1346 ◽  
Author(s):  
David Pérez-Pascual ◽  
Jordi Estellé ◽  
Gilbert Dutto ◽  
Charles Rodde ◽  
Jean-François Bernardet ◽  
...  
Keyword(s):  
Microbial Community ◽  
Gut Microbiota ◽  
Growth Performance ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Partial Replacement ◽  
European Sea Bass ◽  
Protein Sources ◽  
Fish Diets ◽  
Gut Microbial Community

Innovative fish diets made of terrestrial plants supplemented with sustainable protein sources free of fish-derived proteins could contribute to reducing the environmental impact of the farmed fish industry. However, such alternative diets may influence fish gut microbial community, health, and, ultimately, growth performance. Here, we developed five fish feed formulas composed of terrestrial plant-based nutrients, in which fish-derived proteins were substituted with sustainable protein sources, including insect larvae, cyanobacteria, yeast, or recycled processed poultry protein. We then analyzed the growth performance of European sea bass (Dicentrarchus labrax L.) and the evolution of gut microbiota of fish fed the five formulations. We showed that replacement of 15% protein of a vegetal formulation by insect or yeast proteins led to a significantly higher fish growth performance and feed intake when compared with the full vegetal formulation, with feed conversion ratio similar to a commercial diet. 16S rRNA gene sequencing monitoring of the sea bass gut microbial community showed a predominance of Proteobacteria, Firmicutes, Actinobacteria, and Bacteroidetes phyla. The partial replacement of protein source in fish diets was not associated with significant differences on gut microbial richness. Overall, our study highlights the adaptability of European sea bass gut microbiota composition to changes in fish diet and identifies promising alternative protein sources for sustainable aquafeeds with terrestrial vegetal complements.

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