| 摘要 |
PURPOSE:To obtain a preventive and remedy having safe and economic effects on protozoological diseases, containing tannin of condensation type. CONSTITUTION:The titled preventive and remedy containing tannin of condensation type having flavan-2-ol (catechin) shown by formula I [R is group shown by formula II (n is 1-15), 4'-position of R is bonded to 6-position or 8-position of the compound shown by formula I, plural R are bonded to 4'-position, 6'-position and 8'-position and R' shown by formula III is bonded to 6'-position or 8'-position of R], further forming a trimer or a polymer by various bonding manners. Purified tannin of condensation type may be used as the tannin of condensation type and a plant (preferably Parabenzoin trilobum N., Neolitsea aciculata B., of lauraceous plant) or crude drug (e.g. powdered Cinnamon bark or Cinnamomum loureirii Nees) may be used. Chicken coccidiosis, swine coccidiosis and bovine coccidiosis are preferable as the target diseases of the preventive and remedy.
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