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Currently, great progress in the artificial propagation of commercially important   portunid crabs of the genus  has been achieved, and various methods have been adopted in mass-scale hatchery activities. This study analyzed the biological testing of formulated diets with different dose supplementations of vitamin E for the broodstock of female blue swimming crabs,  (Linnaeus, 1758)  Female crab samples were collected from the coastal region of Padang, West Sumatra. The method used in this study was completely randomized design, with four treatment regimens (n=5 crabs each) of dietary vitamin E (0, 300, 600, and 900 IU/kg formulated diets).  The results show that the supplementation of vitamin E in the formulated diet had a significant effect (P <0.05) on the absolute weight growth, carapace length and carapace width.  Supplementation of vitamin E on in formulated diet causes broodstock blue swimming crab molting, with a percentage value of 40-80% on day 20 and 20% on day 30, with a 100% survival rate.

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Studies on Biological Test of Formulated Diets Supplementation of Vitamin E for the Broodstock of Females Blue Swimming Crab, Portunus pelagicus (Linnaeus, 1758)