LEVEL OF CRABLET PRODUCTION IN MANGROVE CRAB Scylla paramamosain WITH FEEDING ENRICHMENT USING HUFA AND VITAMIN C ON LARVAE STAGES
<p><em>The objective of the research was to determine the best enrichment of rotifer and the naupli of <span style="text-decoration: underline;">Artemia</span> as feed for mud crab, <span style="text-decoration: underline;">S</span>. <span style="text-decoration: underline;">paramamosain</span> larvae, also to know their increasing of the DHA/EPA ratio and vitamin C content. Four treatments were tested, namely : A) Mud crab larvae every two days were given rotifer and naupli of <span style="text-decoration: underline;">Artemia</span> enriched with HUFA and vitamin C also added RICA-1 probiotic at 2 mg/L, B) Mud crab larvae every two days were given rotifer and naupli of <span style="text-decoration: underline;">Artemia</span> enriched with HUFA and vitamin C, C). Mud crab larvae every two days were given rotifer and naupli of <span style="text-decoration: underline;">Artemia</span> enriched with vitamin C, and D). Mud crab larvae every three days were given rotifer and naupli of <span style="text-decoration: underline;">Artemia</span> enriched with vitamin C. Result showed that the crablet production from the highest to the lowest was as follows: treatment A (177.5<span style="text-decoration: underline;">+</span>17.6 ind./tank), treatment B (160<span style="text-decoration: underline;">+</span>14.1 ind./tank) (A and B showed no significant different results (P>0.05)), treatment C (136<span style="text-decoration: underline;">+</span>5.6 ind./tank), and treatment D (106<span style="text-decoration: underline;">+</span>8,5 ind./tank) (C and D results indicated a significantly different (P<0.05) with treatment A). Higher level of DHA/EPA ratio of 69.23% was found on rotifer enriched with HUFA, while on naupliof<span style="text-decoration: underline;">Artemia</span> only 28,72%. Higher level content of vitamin C was 50.56% in rotifer enriched with vitamin C, while in naupli of <span style="text-decoration: underline;">Artemia </span>was only increase to 35.56%.</em></p><p><em><strong><em>Keywords</em></strong><em>:</em> <em><span style="text-decoration: underline;">Scylla</span> <span style="text-decoration: underline;">paramamosain</span></em><em> larvae, enrichment, HUFA, vitamin C, crablet</em></em></p>