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Registros recuperados: 13 | |
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Aquacop, Aquacop; Le Moullac, Gilles; Damez, D. |
The notion of penaeid shrimp postlarvae quality, which implies a survival potential, is still a subjective parameter. The zootechnical criteria and the visual observations are not sufficient to evaluate the physiological condition of the hatchery reared postlarvae. The resistance of postlarvae to salinity shocks is a representative criteria of their condition. The goal of this study is to present a non-linear regression model at 2 variables (size, salinity) for the P. vannamei postlarvae resistance to salinity shocks. Between the second and the twentieth day after metamorphosis; 5 salinity shocks (20, 15, 10, 5 and 20/00) were tested daily, each one with 50 postlarvae. Survival rates were recorded after 2 hrs. Concurrently, the postlarvae growth in the... |
Tipo: Text |
Palavras-chave: Salinity; Resistance; Growth; Postlarvae; Penaeus vannamei; Salinité; Résistance; Croissance; Postlarve; Penaeus vannamei. |
Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/1991/publication-4430.pdf |
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Saraoui, Taous; Cornet, Josiane; Guillouet, Emilie; Pilet, Marie France; Chevalier, Frederique; Joffraud, Jean-jacques; Leroi, Francoise. |
Tropical shrimp is of considerable economic importance in the word but is highly perishable due to microbial and chemical degradation. Biopreservation is a food preservation technology based on the addition of “positive” bacteria able to kill or prevent the growth of undesirable microorganisms. Two strains of lactic acid bacteria (LAB) have previously been selected for a biopreservation strategy: Lactococcus piscium CNCM I-4031, for its ability to prevent the sensory deterioration of seafood and Carnobacterium divergens V41, which inhibits growth of Listeria monocytogenes. The objective was to test the association of the two strains to improve both the quality and safety of shrimp. In a first trial, the two LAB were inoculated alone or in a cocktail in... |
Tipo: Text |
Palavras-chave: Carnobacterium divergens V41; Lactococcus piscium CNCM I-4031; Penaeus vannamei; Listeria monocytogenes; Biopreservation. |
Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00353/46412/46140.pdf |
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Kontara, E.K.M.; Merchie, G.; Lavens, P.; Robles, R.; Nelis, H.; De Leenheer, A.P.; Sorgeloos, P.. |
L-ascorbyl-2-polyphosphate (ApP) was used as a vitamin C source to study the ascorbic acid (AA) requirements for the early postlarval stages of white shrimp (<i>Penaeus vannamei</i>). First the stability of ApP in the diets was determined: ApP losses after pelletizing and 10 min immersion in seawater were 25-35% and 30%, respectively. Semipurified diets with five levels of ApP (0, 20, 40, 100 and 200 mg kg<sup>-1</sup> expressed as active AA were fed <i>ad libitum</i> to <i>P. vannamei</i> (PL-14 stage, mean dry weight 0.73 mg) for 26 days. Each treatment was run in five replicates. No significant differences in growth were observed among treatments after 26 days of feeding. As of day 19 of feeding, increased... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diets; Polyunsaturated fatty acids; Shrimp culture; Penaeus vannamei. |
Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2959 |
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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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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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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 <i>Penaeus vannamei</i> 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 |
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Registros recuperados: 13 | |
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