Application of shark liver oil for Artemia enrichment and its comparison with imported selco

Abstract

In this study, enriched emulsion of Artemia was made with reverse engineering using home country potentials. The ingredients of imported Selco were analyzed in chemistry lab of Uremia University. Then different resources containing animal oils with highly unsaturated fatty acids, from waste materials and by products of south water resources aquatic animals harvest (liver oil of shark), vegetable oils provided from wastes of oil extraction factories and regional vegetable oils such as sunflower were studied. Fatty acid profiles of extracted oils from internal sources were analyzed by Gas Chromatography (GC). Provided emulsions were compared with foreign samples as control treatment. Then, the samples were analyzed by GC. The next step was to perform pilot project tests. In the pilot tests, first Artemia enrichment operation with enrichment emulsions was carried out by interior potential and foreign resources according to standard methods. All data were analyzed using SPSS software by one way ANOVA and Duncan test. The enriched nauplii were analyzed chemically by GC. The results showed that the absorption of emulsions in Artemia in interior and foreign samples were 37.47% and 25.30%, respectively. Then, enriched live Artemia nauplii immediately transferred to Ziveh cold water fish farm containing 500 newly feeding larvae of Oncorhynchus mykiss consisted of 3 treatments and a control larval treatment, in which some biologic performances like the mortality rate, growth, Feed conversion ratio and survival rate were determined. Abnormality in larvae, were studied. The results revealed that treatments 1, 2, had a significant difference with treatments 3, 4, on survival rate, growth coefficient, mortality rate and abnormality. The survival rate and growth coefficient and mortality rate and abnormality of treatment 3 had not any significant difference with control. Final results showed that there is the potential of Selco enrichment oils production similar to foreign samples by interior potential.