Summary: | Haemonchus contortus is one of the most significant originators of parasitical infection in ruminants. Reaquirements for new curative schemes growed up under the higher occurance of helmintorezistence in precend years. One of the most important impositions, was to found a new substance of the parasitical infection treatment. This study was founded on the verification of antiparasitical substance - flubendazol in various dosage forms in lambs (Ovis aries). Flubendazol added in dose 15 mg/kg live weight, cause expressive fall of parasitical infection, which was declained by parasitical dissection..In further dosage schemes were used dosages 0,25 , 0,5 a 1 mg/ kg live weight. Fall of infection was proportional to size of dosage of flubendazol. The most expresive fall was recorded in dosage 1 mg/ kg live weight. These determinations were valuaded by coprological examination.
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