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  • enrichment  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Lipid and fatty acid content in cultivated live feed organisms compared to marine copepods (1997)
    Springer
    Hydrobiologia 358 (1997), S. 159-162 
    Details
    ISSN: 1573-5117
    Keywords: Artemia franciscana ; Brachionusplicatilis ; marine copepods ; enrichment ; lipidcontent ; fatty acids ; DHA ; EPA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The total lipid content in Artemia franciscana (21–23% ofdry weight (DW)) when enriched with either Super Selco or DHA Selco wastwice as high as in the adult copepods Temora longicornis and Eurytemora sp.(9–11% of DW). In Brachionus plicatilis the total lipid contentwas 11 and 6.6% for cultures growing at high and low growth rate,0.12 d−1 and 0.38 d−1, respectively. In thecopepodid stages I, II and III of Calanus finmarchicus the total lipid levelwas 12–13%, increasing to 24% in copepodid stage IV, Vand the adults. In T. longicornis and Eurytemora sp. the predominant fattyacids were DHA (22:6n-3), EPA (20:5n-3) and the saturated fatty acid 16:0,which constituted 40–45%, 21–24% and8–12% of total fatty acids, respectively. C. finmarchicuscontained the same dominant fatty acids. In both the cultivated live feedorganisms DHA, EPA and 18:1 were the predominant fatty acids. In A.franciscana the content of these fatty acids varied according to theenrichment medium and in B. plicatilis according to the growth rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003196829109
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Kinetics of n-3 fatty acids in Brachionus plicatilis and changes in the food supply (1989)
    Springer
    Hydrobiologia 186-187 (1989), S. 409-413 
    Details
    ISSN: 1573-5117
    Keywords: Brachionus plicatilis ; live feed ; enrichment ; n-3 fatty acids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Moderately starved rotifers exhibited a two-phased increase in n-3 fatty acids when they were fed a diet rich in these fatty acids. The first 20–30 min of enrichment, the increase in n-3 fatty acids was primarily due to increased gut content. The subsequent slow increase was due to an incorporation of n-3 fatty acids into rotifers tissues. Saturation was achieved before 24 h of exposure and the saturation level was independent of the initial content of n-3 fatty acids in the rotifers. Starvation and limited feeding of the enriched rotifers for additional 4–8 h at 10–20 °C did not affect the accumulated fatty acids significantly. This was found for rotifers with high and low initial content of n-3 fatty acids. The n-3 fatty acids were assimilated with high efficiency from the feed and were not metabolized faster than other groups of fatty acids. Enriched rotifers retained their nutritional value for a sufficient period after enrichment to serve well as live feed for marine fish larvae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00048939
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    Paper (German National Licenses)
    Fulltext
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