The objective of this work was to evaluate the efficiency of Artemia franciscana nauplii, in poliunsturated fatty acid enriched emulsions, for marine shrimp (Farfantepenaeus paulensis) postlarvae feeding. This proceeding aimed the addiction to their diets of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), essential fatty acids for marine organisms, but scarce in nauplii originated in aquatic continental ecosystems. The nauplii were divided in five treatments: a control one with newly-hatched individuals and other four groups, each one enriched with the emulsions: Selco, Super Selco, AlgaMac 2000 and lab made emulsion with cod liver oil, then, offered to the postlarvae. The effect of these diets were compared according to the survival rate, weight gain and stress resistance at the PL10 and PL20 stages. It was observed that Super Selco and Selco emulsions provided the higher increase of the EPA and DHA levels in the nauplii. However, none of the emulsions applied provided significant difference in the observed parameters in comparison to the post-larvae fed with the nauplii from the control group, indicating that the increase of EPA and DHA levels were not critical for the improvement of postlarvae development.
artemia; bioencapsulation; shrimp; farfantepenaeus; nutrition; penaeidae
