The impact of a different cattle management on the incidence of helminths in various age groups.

Under conditions of two types of cattle management (traditional and modern), we identified these helminth genera in the individual age groups of cattle: Strongyloides, Bunostomum, Cooperia, Nematodirus, Oesophagostomum, Ostertagia, Trichostrongylus, Trichuris, Dictyocaulus, dicrocoelium, Fasciola and Moniezia. The incidence of helminths in calves escalates with the age of the host in dependence on the season and the composition of feeding doses. In older animals, helminthic infection is influenced by the type of pasture, the number of animals on one ha, and the treatment before turn out and after turn in. Although an acute form of gastrointestinal helminthiases has sofar not been reported in Czechoslovakia, this situation might arise in modern, intensive husbandry establishments. Therefore, measures should be taken as regards the housing and grazing of cattle which might reduce parasitic infections to a minimum.