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Occurrence of Strongylidae (Nematoda: Strongyloidea) in Polish horses "tarpans" from Popielne Reserve.

The study was performed to evaluate intensity of strongylid infection in stabled tarpans using the method of collecting worms after anthelmintic treatment and in wild tarpans from Popielne reserve on the basis of faecal examination. After treatment with ivermectin 12 cyathostomes and one large strongyle species were recovered from the faeces of two tarpans. The most abundant cyathostome species were C. catinatum, C. pateratum, C. longibursatum, C. nassatum and C. coronatus. A higher intensity of infections with small strongyles (cyathostomes) was found in stabled group than in the group from the reserve. Large strongyles were more prevalent in wild tarpans, with Strongylus vulgaris as most common species (66.7%), but the intensity of infection was low. The present results are compared with earlier studies of horses in Poland and other countries. The results confirm the stability of cyathostomes in different breed of horses over the world.