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dc.contributor.authorRoo, Javieren_US
dc.contributor.authorIzquierdo, Marisolen_US
dc.contributor.authorHernandez-Cruz, C.Men_US
dc.contributor.authorSocorro Cruz, Juan Antonioen_US
dc.contributor.authorFernandez-Palacios, H.en_US
dc.description.abstractMain deformities such as lordosis, opercular deformities and upper/lower jaws shortening are considered as quality descriptors in commercial marine fish fry production and seem to be related with larval culture conditions in early larval stages. The aim of this work was to obtain information about the contribution of the diet and rearing system to the apparition of these abnormalities in gilthead sea bream (Sparus aurata) larvae in semi-industrial scale facilities. For that purpose, two different larval rearing systems semi-intensive and intensive were compared; besides, two different rotifer enrichments, DHA Protein Selco, (Inve Aquaculture, Dendermonde, Belgium) (R1) and Red Pepper Paste, (Bernaqua bvba, Turnhout, Belgium) were tested in the intensive system. Biochemical composition of larvae, preys and commercial products was analysed. At 50 days post hatching six hundred fish per treatment were individually studied under stereoscope and deformity frequency recorded. Besides at 95 days post hatching fry were soft X ray monitored. Both rotifer enrichment and rearing system affected survival, growth and deformity frequency. Rearing system did not affect total larvae fatty acid content except at 20 dah, where DHA were significantly higher and EPA significantly lower in Semi-intensive system. A significantly lower percentage of deformity rates together with better survival and growth were obtained in the semi-intensive system. In dietary treatment, rotifer enrichment significantly affected larval survival. R1 rotifers enrichment significantly (P<0.05) improved survival when compared to fed R2 larvae. The content of DPA was significantly (P<0.05) higher in R2 fed larvae reflecting the R2 rotifers content of this fatty acid. The level of this FA tended to decrease in concordance with the rotifers replacement by artemia in the diet. The effects n-3-HUFA and DPA (22:5n-6) over larval survival and skeletal deformities development is
dc.sourceXI International Symposium on Nutrition and Feeding in Fish. 2004. Phuket, Thailanden_US
dc.subject251092 Acuicultura marinaes
dc.titleEffect of culture system and diet in early larval stages over skeletal deformities development in gilthead sea breamen_US
dc.typeConference posteren_US
dc.type2Póster de congresosen_US
item.fulltextCon texto completo-
item.grantfulltextopen- ECOAQUA: Grupo de Investigación en Acuicultura- de Investigación en Acuicultura Sostenible y Ec- de Biología- ECOAQUA: Ecofisiología de Organismos Marinos- de Investigación en Acuicultura Sostenible y Ec- de Biología- de Investigación en Acuicultura Sostenible y Ec- de Investigación en Acuicultura Sostenible y Ec- Filgueira, Francisco Javier- López, María Soledad-ández Cruz, Carmen María-ández Palacios, Hipólito-
Appears in Collections:Póster de congreso
Poster Deformidades Dorada
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