Abstract
The effects of dietary DHA levels on lipid class compositions, total lipid and phosphoglyceride fatty acid compositions and growth were investigated in gilthead sea bream, Sparus aurata, larvae during the first 2 weeks after hatching. Different dietary levels of DHA were supplied to the larvae in the rotifer, Brachionus plicatilis, previously enriched with (a) Nannochloropsis gaditana, (b) a mixture of N. gaditana, Isochrysis galbana and Rhodomonas sp. or, (c) Protein Selco (Artemia Systems). The results showed that growth performance of gilthead sea bream larvae at first feeding was influenced by both total n-3HUFA and DHA contents of the diet, the best growth rate being achieved with a high n-3HUFA content and a high DHA:EPA ratio. Lipid contents, nutritional status, and total lipid and phophoglyceride DHA levels of the larvae were directly correlated with dietary DHA levels. The fatty acid compositional data suggested that dietary EPA could not contribute significantly to tissue DHA levels in larval gilthead sea bream, presumably due to low Δ4 desaturase activity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
