| 摘要 |
Disclosed is a method for controlling intestinal worms and or parasites in grazing stock, including breaking the worm cycle, enhancing the development of natural immunity to said parasites in the stock and providing means for selecting stock for breeding for internal parasite immunity comprising preparation of an oral drench product in the form of a smooth suspension containing zinc oxide, magnesium oxide and vegetable oil followed by appropriate application of the treatment to stock.
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