| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2014: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2013: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2012: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
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| Outline of Final Research Achievements |
High inclusion levels of soy protein in fish feed for yellowtail result in low growth, because of low digestibility and/or amino acid(s) deficiency. Gut hormone and growth factor were used as indicator to improve those problems. In digestibility, the strong stimulation of gut hormone synthesis and digestive enzyme released was occurred by water-soluble fraction from fishmeal, therefore we decided to blend at least 10% fishmeal for yellowtail feed (LFM). Lacked amino acid(s) in LFM were different by the production lot of fishmeal, but some amino acids were found as deficient amino acid(s) in the diet. Growth performance in fish fed LFM was improved by dietary supplementation of deficient amino acid(s), however further improvement was need to obtain equivalent growth to traditional high fishmeal feed.
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