Abstract
Nutritional quality of Artemia used in prawn hatchery determines the quality of seed output and its performance in the culture. The present study aimed at determining the effect of n-3 HUFA enriched Artemia feeding on growth and survival of postlarvae (PL) of M. rosenbergii. The Artemia were fed with n-3 HUFA emulsions at 2 ml L-1 and samples were taken at 0, 12, 24, 36, 48 h for analyzing fatty acid profile. Results exhibited that 24 h enriched Artemia had a significantly higher level of EPA (3.76±0.11%) and DHA (2.29±0.01%) and it declined after 24 h. The PL of M. rosenbergii were fed with freshly hatched (T1), 12 h enriched (T2), 12 h un-enriched (T3), 24 h enriched (T4) and 24 h un-enriched (T5) Artemia during initial 10 days and reared for 40 days with commercial diet. The highest SGR (3.21% day-1) and survival (83.33 ± 3.34 %) was observed in T4 compared to other treatments. Data of the present study suggest that 24 h is an optimum duration for the enrichment of Artemia and feeding it for short duration enhanced the growth and survival of M. rosenbergii.
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