Consulta: subjectFacets:"N 3 HUFA"
Registros recuperados: 4
Data/hora: 10/06/2024 16:14:23

Impact of essential fatty acid deficiency and temperature on tissues' fatty acid composition of European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Skalli, Ali; Robin, Jean; Le Bayon, Nicolas; Le Delliou, Herve; Person, Jeannine.
The effects of essential fatty acid deficiency and temperature on the fatty acid profiles of polar lipids (PL) and neutral lipids (NL) from various tissues (muscle, liver, gills, eyes and brain) of European sea bass juveniles were compared in a two factorial design. Fish (60 g) were held for 84 days at 22 or 29 C (upper limit for growth) and fed either at a lower or a higher level than n-3 HUFA minimal requirement for growth (0.4% and 2.2% n-3 HUFA dry matter for diets LD and HD, respectively). Essential fatty acid deficiency had a major influence on fatty acids in NL fraction of all tissues, a more moderate influence on PL of muscle, liver and gills, while a low and very low diet influence was observed on eyes and brain PL fatty acid content,...
Tipo: Text
Palavras-chave: Tissue fatty acid composition; Temperature; N 3 HUFA; European sea bass.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1688.pdf

Does dietary n-3 highly unsaturated fatty acids level influence the European sea bass (Dicentrachus labrax) capacity to adapt to a high temperature?
Provedor de dados: 5
Autores: Person, Jeannine; Skalli, Ali; Dulau, Barbara; Le Bayon, Nicolas; Le Delliou, Herve; Robin, Jean.
Triplicate groups of European sea bass juveniles (60 g) were fed for 84 days two experimental diets containing either vegetable or marine oil (0.4 and 2.2% n-3 highly unsaturated fatty acid [n-3 HUFA] dry matter in LD and HD, respectively) and held at 22 or 29 degreesC (LD-22, LD-29, HD-22 and HD-29 groups). Significant differences in mass gain between the two diets and temperatures were, observed from day 28 onwards, and on day 84, weight was 18% higher in the HD-29 group than in the LD-22 group (the highest and lowest values. respectively). Over the 84-day period-SGR was significantly affected both by temperatures and diets (P=6x10(-4) and 2x10(-4) respectively), averaging 1.01 and 1.07 in the HD-22 and HD-29 groups compared to 0.92 and 1.0 in the LD-22...
Tipo: Text
Palavras-chave: Oxygen consumption; Fatty acid composition; Growth; Temperature; N 3 HUFA; European sea bass.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-502.pdf

Requirement of n-3 long chain polyunsaturated fatty acids for European sea bass (Dicentrarchus labrax) juveniles: growth and fatty acid composition
Provedor de dados: 5
Autores: Skalli, Ali; Robin, Jean.
European sea bass juveniles (14.4+/-0.1 g mean weight) were fed diets containing different levels of fish oil then of n-3 highly unsaturated fatty acids (n-3 HUFA) for 12 weeks. The fish performance as well as fatty acid (FA) composition of neutral and polar lipids from whole body after 7 and 12 weeks feeding were studied. The requirements of juvenile sea bass for n-3 highly unsaturated fatty acids (n-3 HUFA) were studied by feeding fish diets containing six different levels of n-3 HUFA ranging from 0.2% to 1.9% of the diet, with approximately the same DHA/EPA ratio (1.5:1).   The growth rate at the end of the trial showed significant differences. Fish fed low dietary n-3 HUFA (0.2% DM of the diet) showed significantly lower growth than the diet 3 (0.7%),...
Tipo: Text
Palavras-chave: N 3 HUFA; Growth; Fatty acid composition; European sea bass Dicentrarchus labrax.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-501.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