Collected reprints: Abstract 2688

Collected reprints

Abstract

Dhert, Ph.; Sorgeloos, P.; Devresse, B. (1993). Contributions towards a specific DHA enrichment in the live food Brachionus plicatilis and Artemia sp.. Fish farming technology 1993: 109-115

This paper reports on enrichment techniques oriented towards a specific DHA accumulation in the live prey Brachionus plicatilis and Artemia sp. The product used in these experiments (DHA7) is an experimental emulsion with a DHA/EPA ratio 6.7:1. Rotifers enriched with this pure DHA7 emulsion contained up to 69 mg/g DW DHA and a DHA/EPA ratio of 1.6. The DHA/EPA ration could be increased to a much higher level by different enrichment techniques. Dilution of the DHA7 emulsion with coconut oil prior to enrichment also had a beneficial effect on the DHA/EPA ratio of the rotifers. Using a mixture DHA7/coconut oil 3:7 the DHA/EPA ratio could be raised to 4.9. In Artemia DHA levels were slightly influenced by changing the salinity during the enrichment procedure. However, scrutinized research oriented towards DHA accumulating Artemia strains may be more appropriate.

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