| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2017: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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| Outline of Final Research Achievements |
I conducted a study to improve the health of fish larvae by feeding rotifers with higher activity in their swimming behavior. Using fish waste from Chub mackerel as a food source (FWD), the highest density of rotifers reached to 1190 individuals/mL, and the DHA and EPA contents met the essential levels for the larvae without nutritional enrichment. The density was further increased by adding commercial probiotics, and stable culture was possible by suppressing the increase of free ammonia and harmful bacteria. The average swimming speed of the larvae increased by 25-58%, and the growth of the Japanese whiting larvae tended to be faster when they were fed with FWD-cultured rotifers.
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