| 摘要 |
PURPOSE: A composition of feed additive containing herbal by-product, elvan, germanium and sericite is provided to enhance immunity of fishes and to improve quality of fishes. CONSTITUTION: A composition of feed additive for fish farming contains 5-8 weight parts of Foeniculum vulgare, 5-8 weight parts of arcone, 2-3 weight parts of cinnamon, 0.5-1 weight parts of Tilia amurensis, and 0.5-1 weight parts of Glycyrrhiza uralensis in 100 weight parts of water. The composition also contains 1.5-2 weight parts of sericite, 0.5-0.7 weight parts of quartz porphyry and 0.5-0.7 weight parts of germanium based on 100 weight parts of the herbal extract. The peels and stems of herbs is prepared by drying to have 20-40% of water content and cutting in a size of 3-5cm.
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