Optimized feeding strategies in the larviculture of the Asian seabass Lates calcarifer.
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This paper reports on the progress made at the Tigbauan hatchery of SEAFDEC in the Philippines, with the larviculture of the Asian seabass Lates calcarifer when using w3-HUFA enriched Brachionus and Artemia . In view of the high correlation between mouth size and total larval length, the feeding of different size classes of Artemia can be better programmed. The incorporation of the HUFA s 20:5w3 and 22:6w3 in the live prey Artemia , and possibly Brachionus , greatly improved larval ability to metamorphose, although it did not affect growth nor survival until day 21. However, when 21 day old fry were subjected to a stress test, much higher survival rates were obtained in HUFA-enriched seabass larvae, illustrating their superior physiological condition over fry cultured with non-enriched Brachionus and Artemia . These findings were used to propose an improved feeding strategy for the larviculture of Lates calcarifer .
food fish ; larvae ; feeding ; cultured organisms; mouth ; fatty acids ; Philippines ; sea bass ; Lates calcarifer
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