Dr. Murai Éva szerk.: Parasitologia Hungarica 21. (Budapest, 1988)

Prevalence of gastrointestinal nematodes on the basis of examining 58 slaughter cattle Number of helminth species 1 2 3 4 5 6 7 8 Total Number of infected animals 5 12 7 10 13 5 2 1 55 Percentage of infected animals 9. 1 21. 8 12. 7 18. 2 23. 7 9. 1 3. 6 1. 8 100.00 Table 3 Prevalence and counts of gastrointestinal nematodes in 58 slaughter cattle Helminth species No. of positive Prevalence of infection

, Worm counts Helminth species samples % Total Average Maximum Ostertagia ostertagi 63 91.3 33 955 585 4 700 Grossspiculagia podjapolskyi 32 55. 1 1 365 23 3 100 Cooperia punctata 30 51. 7 13 910 239 4 330 Trichostrongylus axei 28 48. 2 5 410 93 1 870 Haemonchus contortus 27 46. 5 2 035 35 360 Cooperia oncophora 21 36. 2 4 480 60 1 130 Nematodirus helvetianus 6 10. 3 205 3 95 Bunostomum phlebotomum 5 8. 6 30 0. 5 15 Trichostrongylus colubriformis 3 5. 1 65 1 10 Ostertagia circumcincta 1 1. 7 5 0.08 5 Chabertia ovina 1 1. 7 5 0. 08 5 61 465 1 059