Maturation performance, offspring quality and lipidcomposition of Macrobrachium rosenbergii femalesfed increasing levels of dietary phospholipids |
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Authors: | Ronaldo O Cavalli Gerben Menschaert Patrick Lavens Patrick Sorgeloos |
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Institution: | (1) Laboratory of Aquaculture and Artemia Reference Center, University of Gent, Rozier 44, 9000 Gent, Belgium;(2) Laboratory of Aquaculture and Artemia Reference Center, University of Gent, Rozier 44, 9000 Gent, Belgium |
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Abstract: | The effects of increasing levels of dietaryphospholipids (PL) on the reproductive performance,egg and larval quality, and lipid composition offemales of the freshwater prawn Macrobrachiumrosenbergii were investigated. Three isolipidic dietscontaining similar amounts of highly unsaturated fattyacids but varying levels of PL (0.8, 2.4 and 4.6%)were fed during 180 days to three groups of eightfemales originating from Thai ponds. No significantdifferences were observed for fecundity, egg size andhatchability, starved larvae size, and size, survivaland tolerance to stress of 8 day-old larvae.Similarly, no major differences in the lipidcomposition of the midgut gland, ovaries and muscletissue of females could be detected. Results indicatethe lack of need of dietary supplementation of PL forM. rosenbergii broodstock, as previouslyreported for earlier life stages. It is suggested thatthe basal level of 0.8% dietary PL was sufficient tomeet the dietary demands of the prawn broodstock. ThePL requirements of M. rosenbergii broodstock, ifany, may be satisfied in commercial feeds through theinclusion of ingredients containing some phospholipidsendogenously. |
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Keywords: | body lipid composition egg and larval quality freshwater prawn (Macrobrachium rosenbergii) maturation phospholipids |
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