Consulta: subjectFacets:"Delta 6 desaturase"
Registros recuperados: 3
Data/hora: 11/06/2024 05:33:40

Combined effects of dietary HUFA level and temperature on sea bass (Dicentrarchus labrax) larvae development
Provedor de dados: 5
Autores: Vagner, Marie; Robin, Jean; Zambonino, Jose-luis; Person, Jeannine.
The purpose of this study was to investigate the combined effect of the incorporation of vegetable products in diet and temperature on enzymatic pathways for high unsaturated fatty acids (HUFA) desaturation in sea bass larvae. Four replicated groups were fed a low (LH; 0.8% EPA+DHA) or a high (HH; 2.2% EPA+DHA) n-3 HUFA microparticulated diet from mouth opening, six days post-hatching and were reared at 16 or 22 degrees C. The four experimental conditions (LH16, HH16, LH22 and HH22) were tested for 45 days. At the end of the experiment, body weight, total length and biomass were affected by temperature (P&lt;0.001), while biomass as well as fresh body weight was also influenced by diet (P&lt;0.05 and P&lt;0.001 respectively). This always lead to the same...
Tipo: Text
Palavras-chave: Desaturation; HUFA; Dicentrarchus labrax; Delta 6 desaturase; Aquaculture.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2673.pdf

Is it possible to influence European sea bass (Dicentrarchus labrax) juvenile metabolism by a nutritional conditioning during larval stage?
Provedor de dados: 5
Autores: Vagner, Marie; Zambonino, Jose-luis; Robin, Jean; Person, Jeannine.
The purpose of this study was to check if it is possible to influence sea bass juvenile metabolism by a conditioning of larvae from day 6 post hatching to day 45 to a low or a high HUFA compound diet (LH, 0.8% EPA + DHA and HH, 2.2% EPA + DHA) when reared at 16 or 22 °C. Following a 3-month intermediate period (at 19 °C using a commercial diet), the adaptability of the 4 initial larval groups to a HUFA experimental deprived diet (0.5% EPA + DHA) were tested at 19 °C in a 60 day-experiment (d-151–211). The four experimental duplicated conditions were ex-LH16 and ex-HH16 for the 2 groups previously reared at 16 °C (initial weight, 7.3 ± 0.5 g) and ex-LH22 and ex-HH22 for the 2 groups previously reared at 22 °C (initial weight, 11.1 ± 0.5 g). Survival was...
Tipo: Text
Palavras-chave: Programming concept; HUFA; Dicentrarchus labrax; Delta 6 desaturase; Aquaculture.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2692.pdf

Orientation des processus métaboliques chez les juvéniles de bar européen (Dicentrarchus labrax) par un conditionnement au stade larvaire
Provedor de dados: 5
Autores: Vagner, Marie.
Worldwide supplies of fish oils and meals have reached their sustainable limits, forcing industries to look for alternative lipid sources for use in marine fish diets. As terrestrial animal products are prohibited, there is great interest in aquaculture to produce fish better able to utilise vegetable feedstuffs. Vegetable products are rich in 18 carbon fatty acids (C18 FA) but do not contain C20-22 n-3 highly unsaturated fatty acids (n-3 HUFA), such as ecosapentaenoic (EPA; 20:5n-3) and docosahexaenoic acids (DHA; 22:6n-3). The aim of this study was to know if it would be possible to apply a metabolic programming using nutritional conditioning during early larval stages, as already described in mammals, in order to stimulate the FA desaturation pathways...
Tipo: Text
Palavras-chave: Aquaculture; Delta 6 desaturase; Metabolic programming; N 3 HUFA; Dicentrarchus labrax; Seabass; Aquaculture; Delta 6 désaturase; Programmation métabolique; HUFA n 3; Dicentrarchus labrax; Bar.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/these-6244.pdf