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| Registros recuperados: 44 | |
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| Coutteau, P.; Camara, M.R.; Sorgeloos, P.. |
| The effect of dietary purified phosphatidylcholine (PC) was evaluated on growth, survival, resistance to osmotic shock, and fatty acid composition of early postlarval <i>Penaeus vannamei</i> (0.3 mg initial dry weight) fed semi-purified diets. PC sources used were purified soybean PC (SPC, 95% purity), chicken-egg PC (ECP, 94% purity), and de-oiled soybean lecithin (DSL, 23% PC). The growth response of shrimp fed 1.5% of SPC or 6.5% of DSL was significantly greater than that of shrimp fed a PC-deficient diet, whereas no effect was observed either on survival or stress resistance. Further increasing the dietary level of soybean PC from 1.5% to 3.3% resulted in a significant decrease of the shrimp weight gain. Shrimp receiving 1.5% of PC,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Penaeus vannamei. |
| Ano: 1996 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2932 |
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| Coutteau, P.; Caers, M.; Curé, K.; Gajardo, G.. |
| The success of hatchery production of bivalves remains highly unpredictable and mortalities are often attributed to deficiencies in certain nutritionally important components. Several studies have implicated the importance of lipids, in particular triglycerides, in the early life stages as a source of energy and essential fatty acids. Experimental diets used so far in bivalve nutrition studies are either heavily polluting the water or too complex to prepare on a regular basis in a hatchery. Self emulsifying concentrates of marine oils are off-the-shell lipid supplements that may be acceptable for bivalves. A series of studies were performed with different species and life stages to evaluate the potential use of these lipid emulsions as a supplement for... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1996 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2928 |
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| Coutteau, P.; Sorgeloos, P.. |
| <ol><li>A wide range of species that are cultivated in commercial mariculture are planktonic during at least part of their life cycle; for example, the larval stages of shellfish (shrimp and molluscs) and the live feeds (rotifers, brine shrimp, copepods) used in the larviculture of marine fish and shellfish. Over the last decades various techniques have been developed to deliver nutrients to these zooplanktonic organisms either through artificial diets or by manipulating the composition of the live prey fed to the carnivorous stages. This paper reviews the methodology that has allowed aquaculturists to gain knowledge of nutritional requirements and may offer interesting opportunities for ecologists to verify the importance of key nutrients in... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2929 |
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| García-Ortega, A.; Verreth, J.A.J.; Coutteau, P.; Segner, H.; Huisman, E.A.; Sorgeloos, P.. |
| Decapsulated <i>Artemia</i> cysts were used to study the factors which induce the superior performance of live organisms as food for fish larvae. The biochemical composition, the in vitro protein digestibility, and the total proteolytic and trypsin activities in cysts and nauplii of <i>Artemia</i> were determined at different developmental stages as a function of incubation time. Six different incubation times were studied: 1, 6, 11, 16, 21 and 25h of development, which cover cyst and early nauplii stages. The individual dry weight of <i>Artemia</i> decreased through development. The individual protein and lipid content (µg ind<sup>-1</sup> remained constant during development until the time of hatching after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1998 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=305 |
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| Camara, M.R.; Coutteau, P.; Sorgeloos, P.. |
| Three nutritional experiments were carried out to investigate the effect of dietary phosphatidylcholine (PC) on the growth (length, weight, and metamorphosis) and survival (rearing and stress) of larval and postlarval <i>Penaeus japonicus</i> Bate. Purified soybean phosphatidylcholine (SPC, 95% purity), hen-egg PC (EPC, 94% purity), and de-oiled soybean lecithin (DSL, PC 23% purity) were used as sources of dietary PC. The results indicated that optimal metamorphosis in larval <i>P. japonicus</i> was obtained at levels of 15-30 g kg<sup>-1</sup> of dietary SPC. Feeding trials with postlarval <i>P. japonicus</i> showed that low levels of dietary SPC (15 g kg<sup>-1</sup>) were more beneficial than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Penaeus japonicus [Kuruma shrimp]. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2922 |
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| Coutteau, P.; Sorgeloos, P.. |
| The mass-production of micro-algae has been recognized by several authors as the main bottle-neck for the culture of bivalve seed. This has prompted a search for alternatives to on-site algal production, such as dried heterotrophically-grown algae, preserved algal pastes, micro-encapsulated diets, and yeasts. However the extent to which these products have been tried, and rejected or retained by hatchery operators is poorly documented. Also, the actual algal requirement and production cost of the bivalve seed industry is difficult to estimate.The present inquiry allowed the collection of data concerning the requirement of live algae and its associated costs encountered in 50 commercial and experimental hatcheries from all over the world. Furthermore, the... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1992 |
URL: http://www.vliz.be/imisdocs/publications/113466.pdf |
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| Caers, M.; Coutteau, P.; Lombeida, P.; Sorgeloos, P.. |
| The present study investigated the possible use of emulsions as an artificial lipid supplement to live algae for seed of the Manila clam <i>Tapes philippinarum</i>. The uptake and assimilation of an emulsion, rich in docosahexaenoic acid (DHA, 22:6n-3) and eicosapentaenoic acid (EPA, 20:5n-3) and fed at concentrations of 20 and 40% of the algal dry weight, were verified analytically by fatty acid analysis of the animals and their diets. Dietary requirements for n-3 highly unsaturated fatty acids (HUFA) were examined by supplementing <i>Dunaliella tertiolecta</i>, which contains no polyunsaturated fatty acids longer than 18:3n-3 and <i>Tetraselmis suecica</i>, which contains EPA but only trace amounts of DHA. An algal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clam culture Diets Fatty acids Feed composition Feeding experiments Food additives Lipids Tapes philippinarum (Adams & Reeve; 1850). |
| Ano: 1998 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=299 |
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| Evjemo, J.O.; Coutteau, P.; Olsen, Y.; Sorgeloos, P.. |
| Two <i>Artemia</i> species (<i>Artemia franciscana</i>, GSL strain and a population from <i>Artemia sinica</i>, ARC No. 1188) were enriched with two different emulsions containing high levels of docosahexaenoic acid (DHA) (23 and 44% of total fatty acids, respectively) in filtered seawater (30 ppt) at 28°C. After enrichment nauplii were starved for 72h at three different temperatures (6.1, 12.2 and 22°C). Following enrichment the DHA content and DHA/EPA ratio reached a maximum 41.2 and 42.8 mg g<sup>-1</sup> dry weight and 1.88 and 2.09 in <i>A. franciscana</i> and <i>A. sinica</i>, respectively. During starvation at 12.2°C the DHA content in <i>A. franciscana</i>... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding experiments; Starvation; Artemia. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2942 |
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| Coutteau, P.; Castell, J.D.; Ackman, R.G.; Sorgeloos, P.. |
| Although information on bivalve nutrition is still very scarce, several studies have demonstrated the importance of lipids, in particular triglycerides, as a source of energy and essential fatty acids in the early life stages. Experimental diets used so far to study bivalve nutrition either heavily pollute the water or are too complex to prepare in a hatchery. The potential use of lipid emulsions as off-the-shelf supplements was evaluated through the analytical verification of the ingestion and incorporation of n-3 highly unsaturated fatty acids (HUFA) by the juvenile sea scallop <i>Placopecten magellanicus</i> fed lipid emulsions of different fatty acid composition as a supplement to <i>Isochrysis sp.</i> (clone T-Iso). The average... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Emulsions; Fatty acids; Lipids; Placopecten magellanicus [sea scallop]. |
| Ano: 1996 |
URL: http://www.vliz.be/imisdocs/publications/2934.pdf |
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| Coutteau, P.. |
| Although the requirements for highly unsaturated fatty acids (HUFA), primarily eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3), have been demonstrated for various species of marine fish, major controversies continue to exist over what constitutes the optimal dietary intake of fatty acids and the efficiency of various lipid classes in supplying essential fatty acids. Furthermore, fatty acid requirements have been determined primarily in larval stages using enriched live food and in juvenile fish using pelletized diets, whereas fatty acid requirements during and just after the critical period of weaning are poorly documented. This paper reports on the development of a standard diet that yielded acceptable growth of marine fish... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1996 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2926 |
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| Coutteau, P.; Sorgeloos, P.. |
| An international intercalibration exercise was conducted to evaluate the accuracy of the ICES Standard Methodology for fatty acid analysis in a sample of <i>Artemia</i> and a formulated dry feed. Results were received from 11 of the 20 laboratories to which samples were sent. Five participants followed the Standard Method, five their own in-house method and one laboratory compared their own in-house method with the Standard Method. Total lipid content was reported by eight participants.<p>The average intra-laboratory variation in the determination of total lipid content was only 3.6% (CV) for the dry feed and 4.0% for the <i>Artemia</i> nauplii. The inter-laboratory variation was somewhat higher being 5.2% for the dry feed and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia. |
| Ano: 1995 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2539 |
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| Registros recuperados: 44 | |
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