بررسي ميزان پروتيين ، چربي و پروفيل اسيدهاي چرب آرتمياي درياچه اروميه در مراحل مختلف رشد

Artemia urmiana is one of the seven known bisexual artemia species on the earth. Artemia has been widely used in the development of the world aquaculture industry, specially in shrimp and marine fishes. Industrial exploitation from the Urmia lake artemia can fulfill the requirments of the growing aquaculture industry in Iran and assure its further development. During this research work the nutritional value of decapsulated cysts and biomass of Artemia urmiana in 3 life stages was determined in order to understand its proper applications in aquaculture. Decapsulated cysts, newly hatched nauplii and biomass of artemia at different growth stages all are important due to some reasons such as their smallsize, high nutritional value, movement, good tast and attractivness for the predators. Results indicated that Artemia urmiana was rich in protein (52.30-56.22%), lipids (14.28-16.81 %), oleic acid (16.26-29.22%) and linolenic acid (13.34-20.06%) at all growth stages. This means that the decapsulated cysts and biomass of Artemia urmiana is a highly valuable food source for the freshwater fishes and prawn. But it was observed that the quantity of the highly unsaturated fatty acids, eicosapentanoic and decosahexanoic acid, were low in Artemia urmiana. Therefore it should be enriched with the above fatty acids before it is used as food for shrimp and marine fishes specially during the starter period.