Consulta: creatorFacets:"Le Boucher, Richard"
Registros recuperados: 9
Data/hora: 10/06/2024 15:42:30

Genotype by diet interactions in European sea bass (Dicentrarchus labrax L.): Nutritional challenge with totally plant-based diets
Provedor de dados: 5
Autores: Le Boucher, Richard; Vandeputte, Marc; Dupont-nivet, M.; Quillet, E.; Ruelle, Francois; Vergnet, Alain; Kaushik, Sadasivam; Allamellou, J. M.; Medale, F.; Chatain, Beatrice.
Aquaculture of carnivorous species has strongly relied on fish meal and fish oil for feed formulation; however, greater replacement by terrestrial plant-based products is occurring now. This rapid change in dietary environment has been a major revolution and has to be taken into consideration in breeding programs. The present study analyzes potential consequences of this nutritional tendency for selective breeding by estimating genetic parameters of BW and growth rates estimated by the thermal growth coefficient (TGC) over different periods with extremely different diets. European sea bass (Dicentrarchus labrax L.) from a factorial cross (1,526 fish) between 25 sires and 9 dams were used to estimate heritabilities and genotype by diet interaction. Starting...
Tipo: Text
Palavras-chave: European sea bass; Genetic correlation; Genotype by diet interaction; Genotype by environment interaction; Plant-based diet.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00146/25711/26299.pdf

Des aliments à base de végétaux pour les poissons d’élevage
Provedor de dados: 5
Autores: Medale, F.; Le Boucher, Richard; Dupont-nivet, M.; Quillet, E.; Aubin, Joel; Panserat, S.
World aquaculture is growing (+ 8% per year) to meet the increasing demand of fish for human consumption that capture by fisheries can no longer cover. Consequently, the need for aquafeed and feedstuffs is rising while volumes of fishmeal and fish oil, the traditional aquafeed ingredients, remain stable. More and more fishmeal and fish oil are substituted by plant products. Between 80 and 95% of fish meal can be replaced by a combination of plant protein sources providing the indispensable amino acids in sufficient quantity to meet the fish needs. Beyond this substitution rate, feed intake, feed efficiency and growth rate decrease and metabolic changes are observed despite the diets containing all the required nutrients. Fish oil can be replaced by a mix...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00200/31166/29565.pdf

Génétique de l’utilisation des aliments d’origine végétale chez la truite arc-en-ciel (Oncorhynchus mykiss) et le bar européen (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Le Boucher, Richard; ,.
Nowadays, aquaculture contributes to half of the aquatic products intended for human consumption. The composition of aquafeeds strongly evolved in the past 30 years. Terrestrial plant-based products gradually replace fish meal and fish oil, as fish stocks used for their production reach their exploitation limit. However, the use of diets containing vegetable oils and meals only still lead to growth and health degradation in salmonids and marine fish. besides, breeding programmes in fish farming allowed strong genetic progress, since 1980, on growth, health and quality traits. An important issue for fish breeders is now to understand the consequences of this deep dietary change on the current and future selected populations and to adapt breeding programs...
Tipo: Text
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00079/19037/16620.pdf

Selection for Adaptation to Dietary Shifts: Towards Sustainable Breeding of Carnivorous Fish
Provedor de dados: 5
Autores: Le Boucher, Richard; Dupont-nivet, Mathilde; Vandeputte, Marc; Kerneis, Thierry; Goardon, Lionel; Labbe, Laurent; Chatain, Beatrice; Bothaire, Marie Josee; Larroquet, Laurence; Medale, Francoise; Quillet, Edwige.
Genetic adaptation to dietary environments is a key process in the evolution of natural populations and is of great interest in animal breeding. In fish farming, the use of fish meal and fish oil has been widely challenged, leading to the rapidly increasing use of plant-based products in feed. However, high substitution rates impair fish health and growth in carnivorous species. We demonstrated that survival rate, mean body weight and biomass can be improved in rainbow trout (Oncorhynchus mykiss) after a single generation of selection for the ability to adapt to a totally plant-based diet (15.1%, 35.3% and 54.4%, respectively). Individual variability in the ability to adapt to major diet changes can be effectively used to promote fish welfare and a more...
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00107/21845/19429.pdf

Amélioration génétique et utilisation des aliments à base de végétaux en pisciculture
Provedor de dados: 5
Autores: Le Boucher, Richard; Dupont-nivet, M.; Laureau, S.; Labbe, Laurent; Geurden, I.; Medale, F.; Chatain, Beatrice; Vandeputte, Marc; Quillet, E.
World fish farm production is growing rapidly. However, the supply of fishmeal and fish oil, the major ingredients of fish diets, has reached a limit because of the limits in the exploitation of wild fish stocks that cannot be increased to meet a growing demand. The main response, especially in Europe, has been the progressive replacement of fishmeal and fish oil by plant products. However, the strong reduction of growth and sometimes survival of fish fed highly substituted diets has urged research on the genetic potential for adaptation to plant-based diets. Recent results clearly demonstrate that fish can be selected for their capacity to grow when fed plant-based diets, even though the underlying mechanisms remain unknown. Genotype-diet interactions...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00200/31167/29566.pdf

A first insight into genotype x diet interactions in European sea bass (Dicentrarchus labrax L. 1756) in the context of plant-based diet use
Provedor de dados: 5
Autores: Le Boucher, Richard; Vandeputte, Marc; Dupont-nivet, Mathilde; Quillet, Edwige; Mazurais, David; Robin, Jean; Vergnet, Alain; Medale, Francoise; Kaushik, Sadasivam; Chatain, Beatrice.
This preliminary study assessed genotype x diet interaction in late growth of European sea bass (Dicentrarchus labrax) fed with either a fish meal (FM)- or a fish oil (FO)-based diet (M) or an all-plant-based (PB) diet. A total of 550 fish from 224 families were reared together and tagged. DNA was sampled and microsatellites were used to assign parentage. When fish weight was 192 +/- 54 g, two tanks were fed with M (FM: 100%; FO: 100%) and two others with PB (FM: 0% and FO: 0%). Body weight (BW), fork length (FL) and fillet lipid content (CorrFat) were analysed with a linear model and with REML methodology. We observed no significant differences between groups, but a slightly lower (P=0.03) daily growth coefficient in sea bass fed PB than in those fed M....
Tipo: Text
Palavras-chave: Genotype by diet x environment interaction; European sea bass; Plant diet; Genetic correlation.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00032/14335/12374.pdf

Are there genotype-diet interactions for main production traits when fish are fed marine vs plant-based diets from the first meal ?
Provedor de dados: 5
Autores: Le Boucher, Richard; Quillet, Edwige; Vandeputte, Marc; Lecalvez, Jean Michel; Goardon, Lionel; Chatain, Beatrice; Medale, Francoise; Dupont Nivet, Mathilde.
Facing the finite size of fisheries resources, the important increase of aquaculture production during the last decades has led to the evolution of feed composition with an increasing substitution of fish meal and fish oil with terrestrial plant products. During the same period, selective breeding has been developed in fish and major improvements were achieved on growth, resulting in 4 to 20 % gain per fish generation (Olesen, Gjedrem, Bentsen et al. (2003); Chevassus, Quillet, Krieg et al. (2004)), and also on health and flesh quality traits.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00038/14908/12234.pdf

A first insight into genotype-diet interactions in European seabass (Dicentrarchus labrax) in the context of plant-based diet use
Provedor de dados: 5
Autores: Le Boucher, Richard; Vandeputte, Marc; Dupont Nivet, Mathilde; Quillet, Edwige; Mazurais, David; Robin, Jean; Vergnet, Alain; Medale, Francoise; Kaushik, Sadasivam; Chatain, Beatrice.
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00038/14907/12233.pdf

Plant-based diet in trout (O. mykiss): are there genotype-diet interactions for main production traits when fish are fed marine vs plant-based diets from the first meal ?
Provedor de dados: 5
Autores: Le Boucher, Richard; Quillet, Edwige; Vandeputte, Marc; Le Calvez, J. M.; Goardon, L.; Chatain, Beatrice; Medale, Francoise; Dupont Nivet, Mathilde.
To face future decrease of marine resources, replacement of fishmeal and fish oil by plant products is nowadays worldwide priority for the aquaculture of carnivorous fish, especially salmonids. Genetic variability has been recently evidenced for growth ability on plant-based diet and pointed out potential genetic gains. In a context of fast feed evolution, this work compares heritabilities of growth parameters between rainbow trout fed with diet containing fish oil and fish meal and fish fed on diet devoid of marine products. Assessment of genotype diet interaction informs on potential family reranking between diets and potential consequences on current breeding programmes.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00015/12614/9493.pdf