Author(s): Yousefali Asadpour

Abstract: Artemia is a live food source which enjoys extensive applications in aquatic’s breeding. However, it has little amount of Eicosapentaenoic acid and lacks Docosahexaenoic acid. Enriching artemia to improve its nutritious value is mandatory. Different commercial emulsions are prepared and offered all across the Globe, of which Selco produced by INVE-Aquaculture Company is the most famous one. This emlusion is highly used in Iranian aqua husbandry industry. Importation of this product into Iran faces certain problems and limitations. In this study, the said product was analyzed and made by using domestic capabilities of Iran by using reverse engineering of Selco imported to Iran. Shark liver oil and sunflower oil extraction factories as well as other compounds were used. These suspensions were tested with respect to the control sample. Artemia enriching works were made with emulsions as per the standardrnmethod. The results indicate that enrichment percentage in nauplii Artemia in the control and domestically produced samples have been 37 ± 3 and 25 ± 3. Then enriched Artemia nauplii were dropped on 500 recently-feeding larvae of trout fish on 4 treatments for growth factors biometry for 30 days in alive conditions and fed for 30 days. The results showed that treatments 1 and 2 had significant differences with treatments 3 and 4 in terms of survival percentage, growth factor, total length and level of disorders. However, no meaningful difference between treatments 3 and 4 was seen (P≤0.05). The final conclusion of authors indicates that production of enriching oils domestically by local capabilities is well possible with features similar to the foreign made ones and all the relevant field studies are successful which may replace foreign made enriching oils.

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