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The aim of the study was to evaluate the extensity and intensity of gastro-intestinal parasitic infections in Limousine beef cattle in West Pomerania, Poland, and to assess the efficacy of Valbazen (Pfizer Inc., USA) in a treatment of cattle parasitic infections. The extensity of parasite infections in the examined cattle before the study was 100%. The study has shown the presence of gastro-intestinal nematodes, Eimeria sp. protozoa and Moniezia sp. tapeworms. The extensity of infection of gastro-intestinal nematodes and Moniezia sp. tapeworms was 97.8%, whereas in Eimeria sp. – 86.7%. The efficacy of Valbazen was checked on 21. day after the specimen application. The results of our study indicate a high efficacy of deworming procedure with Valbazen by Pfizer. The study has confirmed that the problem of presence of digestive tract parasites in beef cattle is still live. This in turn indicates the need of undertaking the screening studies in beef herds.

THE EVALUATION OF EFFICACY OF VALBAZEN (PFLIZER) IN THE TREATMENT OF GASTRO-INTESTINAL TRACT PARASITE INVASIONS IN BEEF CATTLE OF WEST POMERANIA