تحت انكوباسيون سرد HufA غني سازي ناپليوس آرتيما اروميانا با امولسيون اسيدهاي چرب و بررسي متابوليسم

Enrichment of Anemia urmiana Nauplii Using Emulsion of Fatty Acids and an Investigation of HUFA Metabolism in Cold Incubation

High unsaturated fatty acids HUFAs are of essential nutritional value in larval food, as these fatty acids play a very important role in survival of growing larvae. Therefore it is necessary to enrich the newly hatched Artemia Nauplii in order to improve HUFA content as well as DHA/EPA ratio. Artemia urmiana contains a very low level of EPA(w3) and only a trace amount of DHA(u 3), therefore it must be enriched before use. In enrichment through use of emulsion, a high increase in EPA as well as in DHA levels as compared to control was observed. During starvation period while in cold incubation, EPA level decreased initially but was followed by a later gradual increase whereas DHA level continued to decrease throughout incubation period. Due to this storing Nauplii for more than 24 hours after enrichment cannot be recommende, because the level of nutritional value would decrease to such low limits that it cannot be used as efficient and suitable larval food.