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Investigations were carried out on 993 cows in 14 breeding farms in 1998-1999. In 871 cows feces from rectum were collected and examined in the laboratory; eggs of Fasciola hepatica were detected in 36, that is 4.13%. The most extensive invasion of fasciolosis was observed in dairy cows from the Myszyniec area (20%) and in farms in the north-east Olsztyn area (8.7-16.7%); the lowest prevalence was...
В целях обнаружения половозрелых нематод из рода Onchocerca было взято от 30 зубров и 40 голов крупного рогатого скота желудочно-селезёночные связки, а также от 18 зубров и 20 голов крупного рогатого скота выйные связки. Пробы исследовали макро- и микроскопически, выделяя найденные нематоды. У 60% исследодованных зубров и 80% крупного рогатого скота установлено нематоды О. lienalis, у 36% зубров и...
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