Modulation of Energy Metabolism and Epigenetic Landscape in Rainbow Trout Fry by a Parental Low Protein/High Carbohydrate Diet.

It is now recognized that parental diets could highly affect offspring metabolism and growth. Studies in fish are, however, lacking. In particular, the effect of a parental diet high in carbohydrate (HC) and low in protein (LP) on progeny has never been examined in higher trophic level teleost fish.

Rainbow trout prefer diets rich in omega-3 long chain polyunsaturated fatty acids DHA and EPA.

The control of feed intake in fish in aquaculture requires the development of new techniques to improve diet composition, feed conversion efficiency and growth. The aim must be sustainability and an effective use of resources. The effect of replacing traditional aqua-feed ingredients (fishmeal and fish oil) by a 100% plant-based diet is known to drastically decrease fish performance (survival and growth).