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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Lipid nutrition of marine fish during early development: current status and future directions
Author(s): Sargent, John R
McEvoy, Lesley
Estevez, Alicia
Bell, J Gordon
Bell, Michael
Henderson, R James
Tocher, Douglas R
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Keywords: marine fish
lipid nutrition
Fishes nutrition
Lipids in nutrition
Fishes Feeding and feeds
Issue Date: 1-Sep-1999
Date Deposited: 22-Aug-2012
Citation: Sargent JR, McEvoy L, Estevez A, Bell JG, Bell M, Henderson RJ & Tocher DR (1999) Lipid nutrition of marine fish during early development: current status and future directions. Aquaculture, 179 (1-4), pp. 217-229.
Abstract: Research on the dietary requirements of marine fish larvae has evolved from considerations of optimal dietary levels of n−3 HUFA to considerations of optimal dietary ratios of the two principal HUFAs, 22:6n−3 and 20:5n−3, and more recently to considerations of optimal dietary levels and ratios of all three dietary essential fatty acids, 22:6n−3, 20:5n−3 and 20:4n−6. Our present understanding of the requirements and optimal dietary balance of 22:6n−3, 20:5n−3 and 20:4n−6 is reviewed. Limitations of enriching live feed are considered, particularly from the point of view of achieving an optimal balance between levels of phospholipids and triacylglycerols in enriched live feeds that generate an optimal blend of essential fatty acids and energy-yielding fatty acids. It is concluded that the ideal marine fish larval diet is one containing circa 10% of the dry weight as n−3 HUFA-rich, marine phospholipids with less than 5% triacylglycerols, as exemplified by the lipid compositions of marine fish egg yolk, marine fish larvae themselves and their natural zooplankton prey. Such diets provide 22:6n−3, 20:5n−3 and 20:4n−6 in the desired levels and ratios and simultaneously satisfy known requirements for phospholipids, inositol and choline. Approaches to developing marine fish larval diets more closely resembling this "gold standard" diet are considered.
DOI Link: 10.1016/S0044-8486(99)00191-X
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