[Liver helminthic cenosis study of sheep].

A total of 2400 incomplete helminthological postmortem examinations were carried out with sheep in 1972-1976. Four species of helminths were found in the liver: D. lanceatum (80.7 per cent), Ech. granulosus (68.4 per cent), F. hepatica (25.6 per cent), and Cyst. tenuicolis (1.7 per cent). Mixed infections were established in 68.2 per cent of the livers: F. hepatica, D. lanceatum, Ech. granulosus--11.5 per cent; F. hepatica, D. lanceatum--6.8 per cent; F. hepatica, Ech. granulosus 3.8 per cent; and D. lanceatum, Ech. granulosus--46.1 per cent. Single worm infections were observed in 26.9 per cent of these organs: D. lanceatum--16.3 per cent; Ech. granulosus--7.1 per cent; F. hepatica--3.5 per cent. Cysticercus tenuicollis was established in 1.7 per cent of the cases. Worm-free were only 5.2 per cent of the livers. In decending order the parasite burden ranked as followes: Ech. granulosus, D. lanceatum, F. hepatica, Cyst. tenuicollis.