CE20 - Biologie des animaux, des organismes photosynthétiques et des microorganismes

Feeding behaviour regulation and impact by omega-3 fatty acids during the life cycle of trout – FEEDOMEGA

Submission summary

In order to maintain a sustainable aquaculture, the traditional ingredients of aquafeed, fishmeal and fish oil, must be replaced by renewable and alternative sources like terrestrial plants products. However, in rainbow trout (Oncorhynchus Mykiss), the total replacement of aquafeed led to drastically altered fish life cycle (survival, growth, reproduction, first spawning and offspring survival). Our hypothesis is related to altered feeding behaviour due to the absence of long-chain omega-3 polyunsaturated fatty acids (DHA) in these plant-based diets. Understanding feeding behaviour as well as the phenotypical, molecular mechanisms and nutritional aspects regulating feed intake of farmed fish fed alternative diets and involvement of omega-3 diet will provide extensive information about how alternative ingredients are perceived by fish.This knowledge will be crucial to develop new nutritional strategies enhancing feed efficiency and reducing nutrient losses during all life cycle of fish farmed.

Project coordinator

Monsieur Jérôme Roy (Nutrition, Métabolisme, Aquaculture)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

NUMEA Nutrition, Métabolisme, Aquaculture

Help of the ANR 336,224 euros
Beginning and duration of the scientific project: September 2021 - 42 Months

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