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| 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... |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00200/31167/29566.pdf |
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| 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... |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00200/31166/29565.pdf |
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| 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... |
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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 |
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