Pengaruh Pengkayaan Artemia Sp. Dengan Epa (Asam Ekosapentanat, C20:5n-3) Dan Dha (Asam Dokosaheksanat, C22:6n-3) Terhadap Kelangsungan Hidup Rajungan Portunus Pelagicus

Abstract

Nutrient content of natural food is one of the main factors for determining the successful of marine fish fry production. EPA (Eicosapentaenoic Acid) and DHA (Docosahexaenoic Acid) are two essential fatty acids for marine fish larvae. Low levels of EPA and DHA content in natural food is major problem in marine fish larval production. Rotifers fed by Nannochloropsis contained EPA about 0.94%-1.46% and DHA was limited, while in Artemia was 0.27%-0.39% EPA and DHA was undetected (Suprayudi et al., 2002a). Feeding on supplemented Artemia with EPA 28G and DHA 70G in ratio of 1:1 could not significantly improved its survival rate and larval development time, while growth by length and carapas width at first crab were higher than that of fed with unenriched Artemia.