[Pastures as a source of helminthiasis invasions in sheep and cattle].
The aim of the study was to find out the influence of naturally invaded environment on heifers and sheep grazing in the open air for the first time, and/or possibilities of parasite transmission between domesticated and wild ruminants. Larvae were proved to be able to survive 11 months in the environment, even if the eggs had been eliminated with excrements to the grass in July at a high temperature of 26 degrees C. For instance, the larvae Nematodirus, Ostertagia, Chabertia and Trichostrongylus, belonging to the most resistant, survived from the July of one year to the June of the subsequent year in a closed sheep-run located on the pasture and excluding a possibility of access of other animals. In April and May, grass samples were positive up to 88% and 90%, root mat samples up to 70% and 72%, respectively. Dictyocaulus survives only over the winter months till April; then it is not resistant to temperature and moisture fluctuations.
D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology / Q000635:transmission*; D004782:Environmental Health; D006373:Helminthiasis / Q000209:etiology; D006374:Helminthiasis, Animal; D007814:Larva; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000635:transmission*; D013696:Temperature
Pastviny jako zdroj invazí helmintóz ovcí a skotu.