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Osmotic stress resistance as a quality diagnostic for penaeid postlarvae OMA
Rees, J.F.; Curé, K.; Piyatiratitivorakul, S.; Menasveta, P.; Sorgeloos, P..
<i>Penaeus monodon</i> postlarvae (PL-5) were reared for 10 days on <i>Artemia nauplii</i> enriched with various levels (2.65, 5.30, 12.60, 22.35 and 31.20 mg/g DW) of (n-3) highly unsaturated fatty acids (HUFA). On day 5 and 10, their resistance to osmotic shocks (transfer from 30 ppt to 0, 5, and 10 ppt diluted seawater) was analyzed. After 5 days, postlarvae fed <i>Artemia</i> containing 12.6 mg/g (n-3)HUFA or more had a significantly higher resistance (p<0.05) than controls. Five days later, no significant difference could be detected among the treatments. A positive correlation was found between the stress resistance of PL-10 and the survival recorded five days later in each tank (p<0.02). It is concluded that...
Tipo: Info:eu-repo/semantics/article
Ano: 1994 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2595
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HUFA levels in eggs of wild and cultured broodstock of <i>Macrobrachium rosenbergii</i> OMA
Lavens, P.; Piyatiratitivorakul, S.; Menasveta, P.; Sorgeloos, P..
The variation in egg quality, i.e. the potential of the egg to produce viable fry, is still a limiting factor in the commercial production of marine fish and crustacean fry. Better knowledge in this field would contribute to improved and especially more consistent hatchery outputs and to the development of more suitable broodstock diets. So far, objective criteria to evaluate egg quality are scarce. However, it is very likely that the nutrient composition of the eggs may be a good indicator for egg viability as it reflects the nutrient demands of the developing embryo and larva. Since (n-3) highly unsaturated fatty acids (HUFAs) have been identified as essential nutrients for the larvae of marine fish, shrimp and prawn a case study has been initiated with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biochemical composition; Brood stocks; Comparative studies; Eggs; Fatty acids; Prawn culture; Shrimp culture; Macrobrachium rosenbergii.
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2876
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Highly unsaturated fatty acid requirements of <i>Penaeus monodon</i> postlarvae: an experimental approach based on <i>Artemia</i> enrichment OMA
Rees, J.F.; Curé, K.; Piyatiratitivorakul, S.; Sorgeloos, P.; Menasveta, P..
<i>Penaeus monodon</i> postlarvae (PL-5 to PL-15) were fed 5 different diets consisting of enriched <i>Artemia nauplii</i> with a specific n-3 HUFA content. Although the postlarvae grew well on an <i>Artemia</i> diet with low HUFA-content, the ability of PL-10 to endure osmotic stress remained low. Feeding <i>Artemia</i> enriched with medium levels of n-3 HUFA (sum n-3 HUFA =12,55mg/g DW) for 5 days considerably enhanced the resistance of PL-10 to osmotic stress and their survival recorded 5 days later. However, very high dietary levels of n-3 HUFA (31,2 mg/g DW) did not have any growth promoting effect, thus suggesting that an excessive supply of n-3 may not be beneficial to the shrimp. Our data demonstrate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemia; Penaeus monodon [giant tiger prawn].
Ano: 1994 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2665
Registros recuperados: 3
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