| 摘要 |
PURPOSE: A stock feed additive containing pegmatite powder is provided to reduce the occurrence of diseases of pig and produce high quality pork having excellent nutriments and improved flavor. CONSTITUTION: The stock feed composition is made by getting powdered pegmatite, natural ore containing germanium, selenium, holmium, cerium and so on, and adding 0.3-1.0wt% of the Pegmatite powder having 4-5μm of particle diameter to 99-99.7wt% of normal concentrated feed. The feed additive can be provided to a feed tank to be drunk by the animal.
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