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

Gastrointestinal helminths and larvae in the abomasum of 31 slaughter cattle Serial number Date of slaughter Number of worms recovered from the lumen of the abomasum Number of larvae obtained by digestion Total no. of larvae Total no. of mature worms Total no. of worms Serial number Date of slaughter Haemonchus Ostertagia Trichostrongylus Larvae : Number of larvae obtained by digestion Total no. of larvae Total no. of mature worms Total no. of worms ! 1 22.02.

Ia83 1 600 900 100 16 116 2 500 2 616 3 22 02. 1983 1 200 800 200 104 304 2 000 2 304 6 22 02. 1983 300 700 50 8 508 1 900 2 408 7 22 02. 1983 400 76 76 400 476 8 22 02. 1983 200 100 28 28 300 328 9 22 02. 1983 200 200 200 17 30 03. 1983 552 552 552 19 30 03. 1983 700 300 76 76 1 000 1 076 23 30 03. 1983 100 100 100 24 12 04. 1983 120 4 000 2 680 360 682 1 042 6 800 7 842 25 12 04. 1983 800 1 600 300 100 116 216 2 700 2 916 27 06 05. 1983 600 300 100 198 298 800 1 098 28 06 05. 1983 2 000 900 264 264 2 900 3 164 29 06 05. 1983 800 400 84 84 1 200 1 284 30 06 05. 1983 1 900 700 200 136 336 2 600 2 036 31 06 05. 1983 3 700 2 000 500 724 1 224 6 300 7 524 Total: 1 000 19 100 10 680 1 760 3 564 5 424 31 500 36 824 Average: 62 1 364 667 110 222 332 2 2 50 2 301 In % of total worm count 9.7 14. 5 85. 5 100. 0 Table 5 Infection of cattle herds by gastrointestinal nematodes on the basis of quantitative ovoscopy Sex and age of animals No. of farms examined No. of animals examined/No. of infected animals Percentage of infected animals EPG values Sex and age of animals No. of farms examined No. of animals examined/No. of infected animals Average Range Average Range Cow 9 344/176 51. 1 34.7- 80.0 48 19- 86 Breeding bull 1 42/ 19 45. 2 27 Calf, bull. heifer 8 170/143 84. 1 25.0-100.0 137 20-325 Growing heifer 16 410/314 76. 5 6.6-100.0 139 4-627 Fattening bull 3 92/ 64 69. 5 30.0- 73.3 104 9-257 Fattening heifer 1 100/ 94 94. 0 196 Total: 1158/810 69. 9 -