Fatty Acid Profiles of Selected Microalgae Used as Live Feeds for Shrimp Postlarvae in Vietnam

The importance of microalgal lipids for the survival and growth shrimp postlarvae has been recognized in a range studies. Microalgae with fast rates high levels polyunsaturated fatty acids (PUFA) are considered vital to maximise production minimise cost larviculture. lipid content acid composition microalgae used varies substantially between algal classes species being Vietnam. This study aims characterise (FA) profiles evaluate most promising under conditions that suitable aquaculture. Here, we report highest contents were obtained Haptophyta microalgae, Tisochrysis lutea Isochrysis galbana, at 90.3 61.1 mg/g, respectively. In contrast, two popular diatom larval cultivation Vietnam, Thalassiosira pseudonana T. weissflogii, displayed lowest 16.1 mg/g. Other examined showed ranging from 28.6 55 Eicosapentaenoic (EPA, 20:5ω3) ranged 0.6 29.9% across species, docosahexaenoic (DHA, 22:6ω3) present 0.01 11.1%; omega (ω)–3 long-chain (LC, ≥C20) LC-PUFA varied groups. Polar main class, 87.2 97.3% total lipids, triacylglycerol was detected 2.5%. Saturated (SFA) monounsaturated (MUFA) increased PUFA decreased increasing temperatures. demonstrated differences FA 10 effect higher temperature growing encountered