Consulta: creatorFacets:"Coutteau, P."
Registros recuperados: 44
Data/hora: 05/06/2024 01:08:28

The effect of different levels and sources of dietary phosphatidylcholine on the growth, survival, stress resistance, and fatty acid composition of postlarval &lt;i&gt;Penaeus vannamei&lt;/i&gt;
Provedor de dados: 27
Autores: 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 &lt;i&gt;Penaeus vannamei&lt;/i&gt; (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

Impact of starvation and of feeding algal and artificial diets on the lipid content and composition of juvenile oysters &lt;i&gt;(Crassostrea gigas)&lt;/i&gt; and clams &lt;i&gt;(Tapes philippinarum)&lt;/i&gt;
Provedor de dados: 27
Autores: Caers, M.; Coutteau, P.; Sorgeloos, P.
The present study evaluated the effect of starvation and of feeding various algal and lipid-supplemented diets on the lipid content and lipid class distribution in the polar and neutral lipids of early juvenile oysters (&lt;i&gt;Crassostrea gigas&lt;/i&gt; and clams (&lt;i&gt;Tapes philippinarum&lt;/i&gt;). &lt;i&gt;T. philippinarum&lt;/i&gt; was starved, fed a mixed algal diet (&lt;i&gt;Tetraselmis suecica&lt;/i&gt; and &lt;i&gt;Isochrysis galbana&lt;/i&gt; (clone T-iso) or solely &lt;i&gt;T. suecica&lt;/i&gt; at three different feeding rations, either supplemented or not supplemented with lipid emulsions. &lt;i&gt;C. gigas&lt;/i&gt; was fed &lt;i&gt;T. suecica&lt;/i&gt; with and without the supplementation of lipid emulsions or liposomes. When...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochemical analysis; Feeding experiments; Juveniles; Lipids; Starvation; Crassostrea gigas [Portuguese oyster]; Isochrysis galbana.
Ano: 2000
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2679

Manipulated yeast diets as a partial algal substitute for the nursery culture of the hard clam &lt;i&gt;Mercenaria mercenaria&lt;/i&gt;
Provedor de dados: 27
Autores: Coutteau, P.; Hadley, N.H.; Manzi, J.; Sorgeloos, P.
Rearing bivalve molluscs in commercial hatchery and nursery systems has so far relied on the production of live algae, which is costly and often unpredictable. Therefore the development of satisfactory artificial diet would greatly reduce the operating costs of bivalve operations. The development of techniques to improve the nutritional composition and digestibility of yeasts resulted in a product with great potential as a substitute for unicellular algae. Previous work on the Manila clam &lt;i&gt;Tapes semidecussata&lt;/i&gt; showed that replacing 80% of the algae by these manipulated yeasts resulted in growth rates of 64 to 93% in comparison with the growth rate obtained for the algal control. In the present study a standard culture test for evaluating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clam culture; Diets; Feed composition; Feeding experiments; Food preferences; Hatcheries; Invertebrate larvae; Rearing.
Ano: 1991
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2809

Supplementation of lipid emulsions to algal diets in the hatchery rearing of bivalves
Provedor de dados: 27
Autores: 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
Ano: 1996
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2928

Effect of heat treatment on the nutritional quality of decapsulated &lt;i&gt;Artemia&lt;/i&gt; cysts as food for African catfish &lt;i&gt;Clarias gariepinus&lt;/i&gt; larvae
Provedor de dados: 27
Autores: García-Ortega, A.; Van Hoornyck, A.; Segner, H.; Coutteau, P.; Verreth, J.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemia; Clarias gariepinus.
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2563

Manipulation of dietary lipids, fatty acids and vitamins in zooplankton cultures
Provedor de dados: 27
Autores: Coutteau, P.; Sorgeloos, P.
&lt;ol&gt;&lt;li&gt;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
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2929

Biochemical and enzymatic characterization of decapsulated cysts and nauplii of the brine shrimp &lt;i&gt;Artemia&lt;/i&gt; at different developmental stages
Provedor de dados: 27
Autores: García-Ortega, A.; Verreth, J.A.J.; Coutteau, P.; Segner, H.; Huisman, E.A.; Sorgeloos, P.
Decapsulated &lt;i&gt;Artemia&lt;/i&gt; 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 &lt;i&gt;Artemia&lt;/i&gt; 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 &lt;i&gt;Artemia&lt;/i&gt; decreased through development. The individual protein and lipid content (µg ind&lt;sup&gt;-1&lt;/sup&gt; 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

Dietary phosphatidylcholine requirements in larval and postlarval &lt;i&gt;Penaeus japonicus&lt;/i&gt; Bate
Provedor de dados: 27
Autores: 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 &lt;i&gt;Penaeus japonicus&lt;/i&gt; 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 &lt;i&gt;P. japonicus&lt;/i&gt; was obtained at levels of 15-30 g kg&lt;sup&gt;-1&lt;/sup&gt; of dietary SPC. Feeding trials with postlarval &lt;i&gt;P. japonicus&lt;/i&gt; showed that low levels of dietary SPC (15 g kg&lt;sup&gt;-1&lt;/sup&gt;) 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

The use of algal substitutes and the requirement for live algae in the hatchery and nursery rearing of bivalve molluscs: an international survey
Provedor de dados: 27
Autores: 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
Ano: 1992
URL: http://www.vliz.be/imisdocs/publications/113466.pdf

Incorporation of different fatty acids, supplied as emulsions or liposomes, in the polar and neutral lipids of &lt;i&gt;Crassostrea gigas&lt;/i&gt; spat
Provedor de dados: 27
Autores: Caers, M.; Coutteau, P.; Sorgeloos, P.
Pacific oysters spat (&lt;i&gt;Crassostrea gigas&lt;/i&gt;) were fed an algal diet (&lt;i&gt;Tetraselmis suecica&lt;/i&gt;) whether or not supplemented with emulsions or liposomes rich in 18:1&lt;i&gt;n&lt;/i&gt;-9, 18:2&lt;i&gt;n&lt;/i&gt;-6 and 22:6&lt;i&gt;n&lt;/i&gt;-3. The preferential accumulation and partitioning of the latter fatty acids between the polar and neutral lipids of &lt;i&gt;C. gigas&lt;/i&gt; spat were followed. Additionally, the efficiency of emulsions and liposomes as fatty acid carriers for &lt;i&gt;C. gigas&lt;/i&gt; spat were compared. The incorporation of dietary fatty acids was found to vary substantially according to the fatty acid carrier (emulsions vs. liposomes), the particular fatty acid (18:1&lt;i&gt;n&lt;/i&gt;-9,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids; Feeding experiments; Larval development; Lipids; Liposomes; Liposomes; Oyster culture; Polyunsaturated fatty acids; Spat; Crassostrea gigas [Portuguese oyster].
Ano: 2000
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3512

Dietary phospholipids for European seabass (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt; L.) during first ongrowing
Provedor de dados: 27
Autores: Geurden, I.; Coutteau, P.; Sorgeloos, P.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dicentrarchus labrax (Linnaeus; 1758) [Bass].
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2564

Effect of a dietary phospholipid supplementation on growth and fatty acid composition of European sea bass (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt; L.) and turbot (&lt;i&gt;Scophthalmus maximus&lt;/i&gt; L.) juveniles from weaning onwards
Provedor de dados: 27
Autores: Geurden, I.; Coutteau, P.; Sorgeloos, P.
Two 40-day feeding trials using extruded diets were conducted to assess the effect of a dietary phospholipid (PL) supplementation on growth, survival and fatty acid composition of European sea bass (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt;) and turbot (&lt;i&gt;Scophthalmus maximus&lt;/i&gt;) from weaning onwards. Two dietary treatments (FO and PL) were tested; both had an identical extruded basis (92,5% total diet weight) coated with a different lipid fraction (7,5% total diet weight). Diet PL contained 2% egg yolk PL (69% pure). In diet FO the PL was replaced by hydrogenated coconut oil. The isolipidic diets contained an equal amount of fish oil ethyl esters providing 1,6% (% diet weight) of n-3 highly unsaturated fatty acids (HUFA). A diet water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Complex lipids Diets Fatty acids Juveniles Dicentrarchus labrax (Linnaeus; 1758) [Bass] Scophthalmus maximus (Linneaus; 1758).
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2951

Manipulation of DHA/EPA ratio in live feed: preliminary results on the effects on survival, growth, pigmentation and fatty acid composition of turbot larvae &lt;i&gt;Scophthalmus maximus&lt;/i&gt; L.
Provedor de dados: 27
Autores: Curé, K.; Gajardo, G.; Coutteau, P.; Sorgeloos, P.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scophthalmus maximus (Linneaus; 1758).
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2543

The effect of lipid supplementation on growth and fatty acid composition of &lt;i&gt;Tapes philippinarum&lt;/i&gt; spat
Provedor de dados: 27
Autores: 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 &lt;i&gt;Tapes philippinarum&lt;/i&gt;. 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 &lt;i&gt;Dunaliella tertiolecta&lt;/i&gt;, which contains no polyunsaturated fatty acids longer than 18:3n-3 and &lt;i&gt;Tetraselmis suecica&lt;/i&gt;, 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 &amp; Reeve; 1850).
Ano: 1998
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=299

Increased docosahexaenoic acid levels in total and polar lipid of European sea bass (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt;) postlarvae fed vegetable or animal phospholipids
Provedor de dados: 27
Autores: Geurden, I.; Coutteau, P.; Sorgeloos, P.
A 6-week feeding trial was conducted with 44d-old European sea bass (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt; L.) in order to examine the effect of various dietary phospholipid (PL) sources on the incorporation of n-3 highly unsaturated fatty acids (HUFA) in tissue lipids. From weaning onwards the fish received diets prepared by coating different lipid fractions (7.5% diet) on an extruded basal diet (92.5% diet). The two PL-free control diets contained 0.5 and 2% of an emulsifier blend, respectively. Seven other diets contained 2% PL, differing by their purity and origin (vegetable or animal). All diets were rendered isolipidic by the addition of hydrogenated coconut oil. Feeding the PL-supplemented diets, except the diet containing hydrolyzed soybean PL...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids Fish culture Lipids Dicentrarchus labrax (Linnaeus; 1758) [Bass].
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2953

The stability of docosahexaenoic acid in two &lt;i&gt;Artemia&lt;/i&gt; species following enrichment and subsequent starvation
Provedor de dados: 27
Autores: Evjemo, J.O.; Coutteau, P.; Olsen, Y.; Sorgeloos, P.
Two &lt;i&gt;Artemia&lt;/i&gt; species (&lt;i&gt;Artemia franciscana&lt;/i&gt;, GSL strain and a population from &lt;i&gt;Artemia  sinica&lt;/i&gt;, 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&lt;sup&gt;-1&lt;/sup&gt; dry weight and 1.88 and 2.09 in &lt;i&gt;A. franciscana&lt;/i&gt; and &lt;i&gt;A. sinica&lt;/i&gt;, respectively. During starvation at 12.2°C the DHA content in &lt;i&gt;A. franciscana&lt;/i&gt;...
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

The use of lipid emulsions as carriers for essential fatty acids in bivalves: a test case with juvenile &lt;i&gt;Placopecten magellanicus&lt;/i&gt;
Provedor de dados: 27
Autores: 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 &lt;i&gt;Placopecten magellanicus&lt;/i&gt; fed lipid emulsions of different fatty acid composition as a supplement to &lt;i&gt;Isochrysis sp.&lt;/i&gt; (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

Determination of fatty acid requirements during weaning and first ongrowing of marine fish using a standard diet
Provedor de dados: 27
Autores: 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
Ano: 1996
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2926

Laboratory and field variation in HUFA enrichment of &lt;i&gt;Artemia nauplii&lt;/i&gt;
Provedor de dados: 27
Autores: Lavens, P.; Coutteau, P.; Sorgeloos, P.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemia.
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2576

Intercalibration exercise on the qualitative and quantitative analysis of fatty acids in &lt;i&gt;Artemia&lt;/i&gt; and marine samples used in mariculture
Provedor de dados: 27
Autores: 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 &lt;i&gt;Artemia&lt;/i&gt; 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.&lt;p&gt;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 &lt;i&gt;Artemia&lt;/i&gt; 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

Comparison of phosphatidylcholine purified from soybean and marine fish roe in the diet of postlarval &lt;i&gt;Penaeus vannamei&lt;/i&gt; Boone
Provedor de dados: 27
Autores: Coutteau, P.; Kontara, E.K.M.; Sorgeloos, P.
The effects of adding two different types of phosphatidylcholine (PC) (purified from soybean lecithin, SPC, or marine fish roe, MPC) on growth, survival and osmotic stress resistance as well as lipid and fatty acid composition of postlarval &lt;i&gt;Penaeus vannamei&lt;/i&gt; was determined. PC was added at a level of 1.5% in a semi-purified diet containing similar levels of essential fatty acids (EFA). A PC-free diet served as the control treatment. The supplementation of 1.5% SPC significantly improved growth and reduced sensitivity to osmotic stress. &lt;i&gt;P. vannamei&lt;/i&gt;-fed MPC showed inferior growth compared to those fed SPC, but yielded better growth and survival than the PC-deprived shrimp. The addition of any of the PC types resulted in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal nutrition; Complex lipids; Diets; Feeding experiments; Lipids; Neurotransmitters; Polyunsaturated fatty acids; Shrimp culture; Survival; Litopenaeus vannamei; Penaeus vannamei.
Ano: 2000
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=37

A combined salinity/countercurrent stress test to evaluate stress sensitivity of juvenile European sea bass &lt;i&gt;Dicentrarchus labrax&lt;/i&gt; L.
Provedor de dados: 27
Autores: Coutteau, P.; Geurden, I.; Schwarz, L.; Sorgeloos, P.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dicentrarchus labrax (Linnaeus; 1758) [Bass].
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2538

Substitute diets for live algae in the intensive rearing of bivalve mollusks: a state of the art report
Provedor de dados: 27
Autores: Coutteau, P.; Sorgeloos, P.
Hatchery rearing of bivalve mollusks depends on the production of live micro-algae, which is costly and often unpredictable, and the development of a cost-effective artificial diet would greatly reduce the operating costs and improve the efficiency of bivalve seed production. This paper reviews the literature on the use of various alternatives to on-site algal production, plus the results obtained by the authors using manipulated yeasts as algal substitutes in feeding trials with juveniles of various commercially important bivalve species, and compares this information with experience "from the field" obtained through an international survey of operators of 50 commercial and research hatcheries. Despite the extensive research efforts, it appears that...
Tipo: Info:eu-repo/semantics/article
Ano: 1993
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2674

The use of manipulated baker's yeast as an algal substitute for the laboratory culture of &lt;i&gt;Anostraca&lt;/i&gt;
Provedor de dados: 27
Autores: Coutteau, P.; Brendonck, L.; Lavens, P.; Sorgeloos, P.
The production of unicellular algae is laborious and is a major constraint for the culturing of aquatic filter-feeders. Because of their small particle size and their high protein content yeasts are considered as a promising substitute for micro-algae. Furthermore, recent work has shown that baker's yeast can be converted into a digestible diet for &lt;i&gt;Artemia&lt;/i&gt; by chemical treatment. The present study documents the use at laboratory scale of this manipulated yeast as an algal substitute for the culture of two anostracan species.The experiments were conducted with the brine shrimp &lt;i&gt;Artemia franciscana&lt;/i&gt; and the fairy shrimp &lt;i&gt;Streptocephalus proboscideus&lt;/i&gt;. A similar experimental set-up was used for both species....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anostraca.
Ano: 1992
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2720

The stability of n-3 highly unsaturated fatty acids in various &lt;i&gt;Artemia&lt;/i&gt; populations following enrichment and subsequent starvation
Provedor de dados: 27
Autores: Triantaphyllidis, G.; Coutteau, P.; Sorgeloos, P.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemia.
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2638

Effect of lipid supplementation on growth, survival and fatty acid composition of bivalve larvae
Provedor de dados: 27
Autores: Coutteau, P.; Caers, M.; Mallet, A.; Moore, W.; Manzi, J.J.; Sorgeloos, P.
Lipids, particularly triglycerides, play an important role in early life stages of bivalves as a source of energy and essential fatty acids. Ingestion and incorporation of the fatty acids supplied through lipid emulsions were verified analytically for larval oysters &lt;i&gt;Ostrea edulis&lt;/i&gt;. Changes of the fatty acid composition, in particular of (n-3) highly unsaturated fatty acids (n-3 HUFA), were demonstrated in total lipids, polar lipids and triglycerides of oyster larvae fed the lipid emulsions as a supplement to &lt;i&gt;Isochrysis galbana&lt;/i&gt; (clone T-Iso), and were dependent on the level and proportion of (n-3) HUFA present in the emulsion. Preliminary culture trials with &lt;i&gt;Mercenaria mercenaria&lt;/i&gt; showed better growth...
Tipo: Info:eu-repo/semantics/article
Ano: 1994
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2556

Baker's yeast as a potential substitute for live algae in aquaculture diets: &lt;i&gt;Artemia&lt;/i&gt; as a case study
Provedor de dados: 27
Autores: Coutteau, P.; Lavens, P.; Sorgeloos, P.
In this study baker's yeast was evaluated as a substitute for live &lt;i&gt;Dunaliella tertiolecta&lt;/i&gt; algae in the culture of the brine shrimp &lt;i&gt;Artemia&lt;/i&gt; . Consumption of fresh baker's yeast resulted in poor growth and survival of brine shrimp. However, the nutritional value of the yeast significantly improved after complete removal of the yeast cell wall by enzymatic treatment. Baker's yeast was also made digestible for &lt;i&gt;Artemia&lt;/i&gt; by simple chemical treatment which did not reduce rigidity of the yeast cell. The external mannoprotein layer of the yeast cell wall is probably the major barrier to digestion by &lt;i&gt;Artemia&lt;/i&gt; . Chemically treated baker's yeast offers promising possibilities as a substitute for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diets; Yeasts; Artemia; Saccharomyces cerevisiae.
Ano: 1990
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3064

A standard experimental diet for the study of fatty acid requirements of weaning and first ongrowing stages of European sea bass (&lt;i&gt;Dicentrarchus labrax&lt;/i&gt; L.): selection of the basal diet
Provedor de dados: 27
Autores: Coutteau, P.; Van Stappen, G.; Sorgeloos, P.
A standard experimental diet was developed to study lipid nutrition in marine fish larvae during weaning and first ongrowing. Basal diets were prepared by extrusion-cooking, crumbling of the pellets, and sieving to obtain particles in the size ranges 150-300 µm and 300-500 µm. Three protein sources in the extruded basal diet were evaluated: (1) micronized cod protein granulate (COD); (2) a mixture of casein, gelatin, and albumin (CGA); (3) a mixture of cod fish meal, whey protein, soybean protein concentrate, albumin, hemoglobin meal, and wheat gluten (MIX). A variable lipid fraction was added to the extruded nucleus by coating the particles with an emulsion, coconut oil (COCO), or fish oil emulsion (FO), in a fluidized bed granulator. European sea bass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dicentrarchus labrax (Linnaeus; 1758) [Bass].
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2541

Effect of algal ration on feeding and growth of juvenile manila clam &lt;i&gt;Tapes philippinarum&lt;/i&gt; (Adams and Reeve)
Provedor de dados: 27
Autores: Coutteau, P.; Curé, K.; Sorgeloos, P.
Juvenile &lt;i&gt;Tapes philippinarum&lt;/i&gt; (Adams and Reeve) were reared for three weeks on different rations of &lt;i&gt;Chaetoceros neogracile&lt;/i&gt; which were either centrifuged and stored or fed together with the culture medium. Algal rations were adjusted daily in order to feed constant weight-specific daily rations. Growth of &lt;i&gt;T. philippinarum&lt;/i&gt; fed the concentrate of &lt;i&gt;C. neogracile&lt;/i&gt; was maximal at a daily ration of 1% (algal dry weight per clam live weight). &lt;i&gt;T. philippinarum&lt;/i&gt; fed single or mixed diets of &lt;i&gt;C. neogracile&lt;/i&gt; and &lt;i&gt;Isochrysis&lt;/i&gt; sp. (clone T-Iso) directly from the algal cultures, maximized growth at a ration of 1,3% day &lt;sup&gt;-1&lt;/sup&gt;....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tapes philippinarum (Adams &amp; Reeve; 1850).
Ano: 1994
URL: http://www.vliz.be/imisdocs/publications/2559.pdf

The use of yeast as single-cell protein in aquacultural diets
Provedor de dados: 27
Autores: Coutteau, P.; Lavens, P.
Aquaculture is becoming more and more an industrial practice. However, feed cost, which may mount up to around 30% of the total operating costs still appears to be one of the major constraints for further expansion of aquaculture. Due to the relatively inexpensive mass-production of yeasts, serious efforts have been made to evaluate the incorporation of these Single-Cell Proteins in aquaculture diets. The aim of this communication is to review the most important results obtained with yeast diets in the different fields of aquaculture. Several authors have reported on the utilization of yeast in fish feeds. Successful incorporation of yeast into fish diets allows replacement of 25-50% of the fish meal component. Because of their small particle size yeasts...
Tipo: Info:eu-repo/semantics/article
Ano: 1989
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3008

Effect of algal ration and substitution of algae by manipulated yeast diets on the growth of juvenile &lt;i&gt;Mercenaria mercenaria&lt;/i&gt;
Provedor de dados: 27
Autores: Coutteau, P.; Hadley, N.H.; Manzi, J.J.; Sorgeloos, P.
The development of a cost-effective algal substitute would greatly reduce the operating costs of bivalve hatcheries. Previous work has resulted in the development of a yeast diet with improved digestibility and nutritional composition. The use of this yeast product as a partial algal substitute for the culture of juvenile hard clams &lt;i&gt;Mercenaria mercenaria&lt;/i&gt; was investigated in a series of growth experiments. Juveniles of the hard clam (1 mg live weight) were batch cultured in a 1 8 1 recirculating system for 2 or 3 weeks. The optimal weight-specific daily ration for a mixture (50/50 on dry weight basis) of &lt;i&gt;Isochrysis galbana&lt;/i&gt; (clone T-Iso) and &lt;i&gt;Chaetoceros gracilis&lt;/i&gt; was found to be 1.5 to 2% dry weight per...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algae Aquaculture techniques Clam culture Diets Food organisms Growth Yeasts Mercenaria mercenaria (Linnaeus; 1758) [Northern quahog].
Ano: 1994
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2567

Variation of lipid and fatty acid content in larval and early juvenile stages of the hard clam &lt;i&gt;Mercenaria mercenaria&lt;/i&gt; L. in a commercial hatchery
Provedor de dados: 27
Autores: Caers, M.; Coutteau, P.; Moore, W.; Manzi, J.; Sorgeloos, P.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mercenaria mercenaria (Linnaeus; 1758) [Northern quahog].
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2530

Feeding of the brine shrimp &lt;i&gt;Artemia&lt;/i&gt; on yeast: effect of mechanical disturbance, animal density, water quality and light intensity
Provedor de dados: 27
Autores: Coutteau, P.; Sorgeloos, P.
Details are given of experiments conducted to determine the effects of tank culture conditions on the feeding of &lt;i&gt;Artemia&lt;/i&gt;. Mechanical disturbance, animal density and water quality were found to affect the feeding rate of &lt;i&gt;Artemia&lt;/i&gt;. The importance of culture conditions in maintaining a rate of food consumption which does not limit the growth of the brine shrimp is stressed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brine shrimp culture; Culture tanks; Feeding; Water quality; Artemia.
Ano: 1989
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2811

Effect of dietary phosphatidylcholine on growth and lipid composition of post-larval &lt;i&gt;Penaeus vannamei&lt;/i&gt; (Boone)
Provedor de dados: 27
Autores: Camara, M.R.; Coutteau, P.; Sorgeloos, P.
Dietary phospholipids and particularly phosphatidylcholine have been found to enhance growth and survival in penaeid shrimp, an effect which has been attributed to their limited ability to synthesize phospholipids de novo. However, most of the studies made so far have used low purity phospholipids and therefore, precise requirements for dietary phosphatidylcholine among several species of shrimp have been difficult to establish.As part of a broad study which aims to study lipid nutrition in penaeid shrimp, the dietary effect of purified phosphatidylcholine (PC) on growth, survival, stress resistance and body lipid composition of post-larval &lt;i&gt;Penaeus vannamei&lt;/i&gt; fed semi-purified microbound diets was evaluated. Changes on the body lipid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Penaeus vannamei.
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2532

The effect of DHA/EPA ratio in live feed on the fatty acid composition, survival, growth and pigmentation of turbot larvae &lt;i&gt;Scophthalmus maximus&lt;/i&gt; L.
Provedor de dados: 27
Autores: Curé, K.; Gajardo, G.; Coutteau, P.
A set of experiments was designed to understand the effect of standardized enrichment diets on the fatty acid composition and culture performance of turbot larvae reared using the food chain rotifers -freshly hatched &lt;i&gt;Artemia&lt;/i&gt; nauplii- enriched &lt;i&gt;Artemia&lt;/i&gt; . Rotifers were fed on experimental diets of similar total n-3 HUFA content (34-39 mg/g DW) but different DHA/EPA ratio (0.7, 2.6 and 5.5). DHA/EPA ratio in &lt;i&gt;Artemia&lt;/i&gt; was manipulated by 24-h enrichment with an emulsion with either a high or low DHA/EPA ratio (respectively, 4.0 and 0.7). Results produced by three experiments showed that the n-3 HUFA composition of the rotifers (DHA/EPA 0.7-2.2) was a reflection of the diet composition, which in turn...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids Growth Live feed Survival Scophthalmus maximus (Linneaus; 1758).
Ano: 1996
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2952

Promising results in the seed culturing of the Manila clam &lt;i&gt;Tapes semidecussata&lt;/i&gt; with a manipulated yeast product as a partial substitute for algae
Provedor de dados: 27
Autores: Albentosa, M.; Naessens, E.; Léger, P.; Coutteau, P.; Lavens, P.; Sorgeloos, P.
The results are presented of preliminary trials conducted with &lt;i&gt;Tapes semiducussata&lt;/i&gt; spat using manipulated yeast products as substitutes for unicellular algae in their diets. Findings showed that spat growth increased with increasing amounts of algae in the artificial diet; growth was very poor when no algae were offered at all. It is concluded that manipulated yeasts may replace a substantial part of the algae in clam diets, but complete replacement is not possible, yet.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial feeding; Clam culture; Diets; Nutritive value; Yeasts.
Ano: 1989
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2801

Nutritional improvement of the commercial production of marine aquaculture species through application of innovative biotechniques
Provedor de dados: 27
Autores: Gajardo, G.; Coutteau, P.; Curé, K.; Sorgeloos, P.; Beardmore, J.A.
Marine aquaculture, particularly the salmon farming industry, has expanded very fast in Chile. Currently the country ranks second among the world leading salmon producers. However, there is a growing concern for the diversification of aquaculture activities. Examples are the cultures of flatfishes, either the introduced turbot (&lt;i&gt;Scophthalmus maximus&lt;/i&gt;) or the native flounder species &lt;i&gt;Paralichthys microps&lt;/i&gt; and &lt;i&gt;P. adspersus&lt;/i&gt;, along with the native scallop, &lt;i&gt;Argopecten purpuratus&lt;/i&gt;. Although both turbot and scallop farming have had a successful transition from pilot to industrial scale, dependable availability of larvae/seed at cost-effective prices is, unlike the situation in the salmon...
Tipo: Info:eu-repo/semantics/article
Ano: 1996
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2961

Incorporation of fatty acids from dietary neutral lipid in eye, brain and muscle of postlarval turbot fed diets with different types of phosphatidylcholine
Provedor de dados: 27
Autores: Geurden, I.; Reyes, O.S.; Bergot, P.; Coutteau, P.; Sorgeloos, P.
Previous results demonstrated the stimulating effect of soybean phosphatidylcholine (PC) on the utilization of dietary neutral lipid in larval and postlarval fish. The present study further investigated the effect of the degree of saturation of dietary PC on the enhancement of dietary fatty acid incorporation in lipids of turbot. Newly-weaned turbot were fed for 20 days on four isolipidic diets containing the same amount of highly unsaturated fatty acids (HUFA), presented either as neutral lipid, i.e. fish oil ethyl esters, or as polar lipid. Diet FO was a phospholipid-free control diet. Diets HPC, SPC and FPC were supplemented with 3% hydrogenated soybean PC, 3% native soybean PC and 3% marine fish roe PC, respectively.The three PC-supplemented diets...
Tipo: Info:eu-repo/semantics/article
Ano: 1998
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=307

Manipulated yeast diets as a partial algal substitute for rearing bivalve molluscs: laboratory trials with &lt;i&gt;Tapes semidecussata&lt;/i&gt;
Provedor de dados: 27
Autores: Coutteau, P.; Lavens, P.; Léger, P.; Sorgeloos, P.
The development of a cost-effective algal substitute would greatly reduce operating costs of bivalve hatcheries and has therefore been the subject of many studies. Previous work has resulted in the development of a yeast diet with improved digestibility and nutritional composition. Preliminary trials showed that this diet can substitute up to 80% of the algal diet in the seed culture of the Manila clam &lt;i&gt;Tapes semidecussata&lt;/i&gt;. In this communication we propose a culture test diet which will be used to study further dietary improvements of the yeast product.Juveniles of the Manila clam (1 to 5 mg unit weight) were batch cultured in a 51 recirculating system. Optimal daily ration for the algal control diet &lt;i&gt;Chaetoceros...
Tipo: Info:eu-repo/semantics/article
Ano: 1990
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2812

The use of artificial diets in the hatchery rearing of bivalve mollusks
Provedor de dados: 27
Autores: Coutteau, P.; Sorgeloos, P.
Hatchery rearing of bivalve mollusks depends on the production of live micro-algae, which is costly and often unpredictable. Therefore, the development of a cost-effective artificial diet would greatly reduce the operating costs and improve the efficiency of bivalve seed production. This paper reviews the results reported so far in the literature on the use of the various alternatives to on-site algal production. Furthermore, an overview is presented of the results obtained by the authors using manipulated yeasts as algal substitutes in feeding trials with juveniles of various commercially important bivalve species. Literature data and experimental findings were compared with experience "from the field" through an international inquiry among the operators...
Tipo: Info:eu-repo/semantics/article
Ano: 1992
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2742

Effect of dietary phospholipid on requirements for and incorporation of &lt;i&gt;n&lt;/i&gt;-3 highly unsaturated fatty acids in postlarval &lt;i&gt;Penaeus japonicus&lt;/i&gt; Bate
Provedor de dados: 27
Autores: Kontara, E.K.M.; Coutteau, P.; Sorgeloos, P.
&lt;i&gt;Penaeus japonicus&lt;/i&gt; postlarvae were fed three dietary levels of n-3 highly unsaturated fatty acids (HUFA) (0, 0.5 and 1%) with or without 1.5% soybean phosphatidylcholine (SPC; 95% purity). The experiment was conducted during two successive phases of 20 days starting with 12-day-old postlarvae. Supplying 1.5% of SPC and 1% &lt;i&gt;n&lt;/i&gt;-3 HUFA in the diet significantly improved the growth, survival and resistance to osmotic stress of postlarvae compared to those fed phosphatidylcholine (PC)-free and HUFA-free diets, respectively. A significant interaction between dietary SPC and n-3 HUFA was only found for their effect on resistance to osmotic stress. A significant drop in stress sensitivity was obtained in the PC-deprived shrimp...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Complex lipids; Polyunsaturated fatty acids; Penaeus japonicus [Kuruma shrimp].
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2956

Questionnaire on the use of algal substitutes and the requirement for live algae in hatchery and nursery rearing of bivalve mollusks
Provedor de dados: 27
Autores: Coutteau, P.; Sorgeloos, P.
In the frame work of a PhD thesis dealing with the use of artificial diets as an algal substitute for mollusks, the Laboratory of Aquaculture &amp; Artemia Reference Center (State University of Ghent, Belgium) is organizing an inquiry which aims at drawing up an inventory of algal substitutes, their cost and applications, and their relative importance and cost-efficiency compared to live algae. The questionnaire has been sent to more than 200 people who are involved in the practice of culturing bivalves. The results will be treated as part of the PhD work and a free copy of the resulting report will be sent to all those who are returning the form. The questionnaire will be presented at Aquaculture Europe 1991 in Dublin under the form of a poster. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial feeding; Diets; Feeding experiments; Food organisms.
Ano: 1991
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2813

&lt;i&gt;Artemia&lt;/i&gt; from Madagascar reveals an exceptionally high n-3 highly unsaturated fatty acid content
Provedor de dados: 27
Autores: Triantaphyllidis, G.; Coutteau, P.; Miasa, E.; Sorgeloos, P.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemia.
Ano: 1995
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2634

Review on the dietary effects of phospholipids in fish and crustacean larviculture
Provedor de dados: 27
Autores: Coutteau, P.; Geurden, I.; Camara, M.R.; Bergot, P.; Sorgeloos, P.
A beneficial effect of dietary phospholipid (PL) supplementation in purified diets in terms of survival, growth, resistance to stress tests, and occurrence of deformities has been demonstrated in larval and juvenile stages of various species of fish and crustaceans. The exact determination of PL requirements in larvae is complicated due to the difficulty to bio-encapsulate PL in live prey. Furthermore, the great variety in purity and composition of the PL sources, and the experimental conditions (such as diet formulation and extent of co/prefeeding with live food) makes it difficult to compare requirements determined with artificial diets. Larval stages are extremely sensitive to a dietary PL deficiency and require higher levels of dietary PL than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Complex lipids; Crustacean culture; Crustacean larvae; Diets; Fish culture; Fish larvae.
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2927