Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/29855
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Short-term lecithin enrichments can enhance the phospholipid and DHA contents of the polar lipid fraction of Artemia nauplii
Author(s): Cavrois Rogacki, Thomas
Davie, Andrew
King, Edward
Esnault, Sébastien
Migaud, Herve
Monroig, Oscar
Contact Email: andrew.davie@stir.ac.uk
Keywords: Artemia
DHA
Enrichment
Lecithin
Polar lipids
Issue Date: 15-Aug-2019
Citation: Cavrois Rogacki T, Davie A, King E, Esnault S, Migaud H & Monroig O (2019) Short-term lecithin enrichments can enhance the phospholipid and DHA contents of the polar lipid fraction of Artemia nauplii. Aquaculture, 510, pp. 122-130. https://doi.org/10.1016/j.aquaculture.2019.05.041
Abstract: Wild copepods are the main natural diet of marine finfish and they meet the larvae's requirements in phospholipids and essential fatty acids (EFA). While Artemia nauplii are an easier and more reliable live feed to produce in hatcheries for marine fish larvae than wild zooplankton, enrichment products commercially used lack phospholipids and essential long-chain polyunsaturated fatty acids (LC-PUFA). This is particularly true for docosahexaenoic acid (DHA) within their polar lipid fraction (PLDHA), which is critical to the survival and good development of the larvae. In this study, we showed that it is possible to increase the levels of phospholipids and DHA within the PL fraction of Artemia nauplii using marine lecithin through a process referred to as “boosting”. A cheaper alternative to marine lecithin, soya lecithin, was also tested but resulted only in a significant increase of the phospholipid content of the nauplii with no positive effect on the essential LC-PUFA levels, due to the absence of LC-PUFA in the soya lecithin. This study also showed that the levels of PLDHA in the Artemia boosted with marine lecithin did not reflect the levels of PLDHA in the lecithin, highlighting there the complexity of the boosting process. Finally, chilling enriched Artemia nauplii at 5 °C for up to 10 h did not impact on their nutritional quality post-enrichment. Ultimately, this study proposes innovative and sound enrichment strategies to produce Artemia nauplii rich in EFA and/or PL, similarly to that of the wild copepods' lipid profile.
DOI Link: 10.1016/j.aquaculture.2019.05.041
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Cavrois Rogacki T, Davie A, King E, Esnault S, Migaud H & Monroig O (2019) Short-term lecithin enrichments can enhance the phospholipid and DHA contents of the polar lipid fraction of Artemia nauplii. Aquaculture, 510, pp. 122-130. DOI: https://doi.org/10.1016/j.aquaculture.2019.05.041 © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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