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Registros recuperados: 30
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Incorporation of different fatty acids, supplied as emulsions or liposomes, in the polar and neutral lipids of <i>Crassostrea gigas</i> spat OMA
Caers, M.; Coutteau, P.; Sorgeloos, P..
Pacific oysters spat (<i>Crassostrea gigas</i>) were fed an algal diet (<i>Tetraselmis suecica</i>) whether or not supplemented with emulsions or liposomes rich in 18:1<i>n</i>-9, 18:2<i>n</i>-6 and 22:6<i>n</i>-3. The preferential accumulation and partitioning of the latter fatty acids between the polar and neutral lipids of <i>C. gigas</i> spat were followed. Additionally, the efficiency of emulsions and liposomes as fatty acid carriers for <i>C. gigas</i> 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<i>n</i>-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
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The effect of HUFA and vitamin C-enriched rotifers on larval growth and survival of grouper (<i>Epinephelus suillus</i>) OMA
Chavez, D.R.; Estenor, D.G.; Merchie, G.; Lavens, P..
Newly-hatched grouper larvae were reared for 24 days at a density of 15 larvae.l<sup>-1</sup> in 250-l capacity cylindro-conical tanks filled with 200l seawater. Starting day 2, the larvae were given: <i>Chlorella</i>-fed rotifers (Chl-R) rotifers fed Culture Selco (INVE Aquaculture NV, Belgium) (CS-R), and rotifers fed Culture Selco and consequently enriched for 24h with 20% vitamin C (CSC-R). The rotifer density in the larval tanks was maintained at 15 rotifers.ml<sup>-1</sup>. The rotifer diet was supplemented with egg yolk until day 5. Each treatment had five replicates. Preliminary results show no significant difference in the survival rate of grouper larvae given Chl-R (4.21±2.8%), CS-R (2.56±0.9%) and CSC-R...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fatty acids; Feeding experiments; Growth; Larvae; Survival; Vitamin C; Chlorella; Epinephelus suillus; Rotifera.
Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2537
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Protein digestion in juvenile turbot (<i>Scophthalmus maximus</i>) and effects of dietary administration of <i>Vibrio proteolyticus</i> OMA
De Schrijver, R.; Ollevier, F.P..
The trial was made to study the protein digestion in juvenile turbot during passage of digesta from stomach to rectum. Moreover, diet supplementation with the potential probiotic bacteria, <i>Vibrio proteolyticus</i>, was evaluated with regard to protein digestion. For a 3-week period, fish (25-30 g) were fed by oral intubation and received either a liquid mixture consisting of 40% nonpurified control diet and 60% water or this mixture supplemented with 10 <sup>10</sup> viable <i>V. proteolyticus</i> ml <sup>-1</sup>. Daily dry matter was 1.5% body weight. As digesta progressed from the stomach to the foregut, hindgut and rectum, the increase in apparent nitrogen digestibility was accompanied by higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Diets; Digestibility; Digestion; Feeding experiments; Fish culture; Food conversion; Nitrogen; Probiotics; Probiotics; Proteins; Scophthalmus maximus; Stomach; Scophthalmus maximus; Vibrio proteolyticus.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=9593
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Improved larval survival at metamorphosis of Asian seabass (<i>Lates calcarifer</i>) using omega3-HUFA-enriched live food OMA
Dhert, P.; Lavens, P.; Duray, M.; Sorgeloos, P..
Asian seabass (<i>Lates calcarifer</i>) larvae were fed <i>Brachionus</i> cultured on <i>Chlorella</i> and, as soon as ingestion was possible, different types of <i>Artemia</i> , i.e., nauplii of the San Francisco Bay (SFB) strain, Great Salt Lake (GSL) strain or GSL nauplii that had been bioencapsulated with an emulsion containing high levels of the omega3-HUFAs (highly unsaturated fatty acids) 20:5 and 22:6. San Francisco Bay <i>Artemia</i> with a good natural fatty acid profile and small body size could be offered earlier than the larger but HUFA-poor Great Salt Lake strain. The poor nutritional quality of the latter, however, could be corrected by enriching the nauplii with an omega3-HUFA...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fatty acids; Feeding experiments; Food additives; Food organisms; Metamorphosis; Nutritional requirements; Polyunsaturated fatty acids; Lates calcarifer.
Ano: 1990 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3079
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Maturation performance of <i>Penaeus vannamei</i> co-fed <i>Artemia</i> biomass preparations OMA
Naessens, E.; Lavens, P.; Gomez, L.; Browdy, C.L.; McGovern-Hopkins, K.; Spencer, A.W.; Kawahigashi, D.; Sorgeloos, P..
Few shrimp hatcheries successfully propagate captive broodstock on a commercial scale. Diets for acceptable maturation performance of <i>Penaeus vannamei</i> have typically relied on the inclusion of marine polychaetes (bloodworm) from Panama or Maine, USA, which are expensive and are of unpredictable supply. Studies were therefore undertaken at experimental and commercial scale to replace or supplement the polychaetes by frozen ongrown <i>Artemia</i> which were either non-enriched or bioencapsulated with specific boosters. In experiment 1 the control diet consisted of frozen squid only and was evaluated against broodstock diets where 60% of the squid was substituted by bloodworm or enriched <i>Artemia</i> biomass....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomass; Feeding experiments; Sexual maturity; Artemia; Penaeus vannamei.
Ano: 1997 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2967
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The stability of docosahexaenoic acid in two <i>Artemia</i> species following enrichment and subsequent starvation OMA
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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Maturation performance, offspring quality and lipid composition of <i>Macrobrachium rosenbergii</i> females fed increasing levels of dietary phospholipids OMA
Cavalli, R.O.; Menschaert, G.; Lavens, P.; Sorgeloos, P..
The effects of increasing levels of dietary phospholipids (PL) on the reproductive performance, egg and larval quality, and lipid composition of females of the freshwater prawn <i>Macrobrachium rosenbergii</i> were investigated. Three isolipidic diets containing similar amounts of highly unsaturated fatty acids but varying levels of PL (0.8, 2.4 and 4.6%) were fed during 180 days to three groups of eight females originating from Thai ponds. No significant differences were observed for fecundity, egg size and hatchability, starved larvae size, and size, survival and tolerance to stress of 8 day-old larvae. Similarly, no major differences in the lipid composition of the midgut gland, ovaries and muscle tissue of females could be detected. Results...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal nutrition; Brood stocks; Complex lipids; Diets; Eggs; Feed composition; Feeding experiments; Females; Prawn culture; Sexual maturity; Sexual reproduction; Macrobrachium rosenbergii; Thailand.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3347
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Comparison of phosphatidylcholine purified from soybean and marine fish roe in the diet of postlarval <i>Penaeus vannamei</i> Boone OMA
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 <i>Penaeus vannamei</i> 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. <i>P. vannamei</i>-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
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Cofeeding of phospholipids to turbot <i>Scophthalmus maximus</i> L. larvae as a tool to reduce live food consumption OMA
Dhert, P.; González Félix, M.; Van Ryckeghem, K.; Geurden, I.; Thysen, F.; Lebegue, E.; Lavens, P.; Sorgeloos, P..
The possible benefits of feeding a formulated diet, together with <i>Artemia</i> , to first-feeding turbot larvae were investigated. Five dietary regimes were used: control ( <i>Artemia</i> only), cofeeding with a diet rich in phospholipid (PL) from bovine brain, cofeeding with a diet rich in free fatty acids (FFA) from the same source, cofeeding with a commercial diet (Lansy A2), and a formulated feed only (PL-rich diet). All treatments with artificial diets and the control treatment that received <i>Artemia</i> exclusively gave a similar survival rate of the fish at day 29. Cofeeding with artificial diets resulted in a lower growth rate than the control treatment. Cofeeding the larvae with PL-rich or FFA-rich diets did...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture techniques; Feeding experiments; Fish culture; Fish larvae; Food organisms; Scophthalmus maximus; Artemia.
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4014
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Questionnaire on the use of algal substitutes and the requirement for live algae in hatchery and nursery rearing of bivalve mollusks OMA
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 & 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
Registros recuperados: 30
Primeira ... 12 ... Última
 

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