THERAPEUTIC AND PREVENTIVE MEASURES IN BASIC INTESTINAL NEMATODOSIS OF EUROPEAN BISONS

Abstract

The European bison (Bison b. bonasus) inhabits various regions of the Russian Federation, Lithuania, Belarus, Ukraine, and 328 other countries. Currently, the genetic core for breeding bison in the territory of the Russian Federation is the Prioksko-Terrasny State Reserve. The study of bison endoparasotifauna was carried out in the FSBI Prioksko-Terrasny Reserve, the Moscow Region, "Bison Nursery" of the SB RAS in the Altai Republic and in Bryansky Les Reserve, Bryansk Region, and the Department of Parasitology and Veterinary-Sanitary Inspection of the FSBEI HE MGAVMiB – MBA named after K.I. Scryabin. A total of 192 samples were selected and examined, 159 from the Prioksko-Terrasny Reserve, 15 from the Bison Nursery of the SB RAS, and 18 from the Bryansky Les Reserve. The endoparasitofauna of bisons from the Prioksko-Terrasny Reserve is represented by one species of trematodes, one species of cestodes, three genera of nematodes and one genus of protozoa: Fasciola hepatica, Moniezia benedeni, Trichostrongylus sp., in the study of 15 samples from the "Bison Nursery" of the SB RAS, Altai Republic, only one sample revealed single eggs of helminths from the genus Trichostrongylus sp., the prevalence is 6.6%, and the study of 18 bison fecal samples from the Bryansky Les Reserve identified nematodes from the genus Trichostrongylus sp., the prevalence is 27.7%, and the genus Nematodirus sp., the prevalence is 5.5%. When determining the effectiveness of Anthelminthics of various formulations, one of which is in the form of a powder for oral use containing fenbendazole as the active substance, and the other-injectable with the active substance closantel, it was found that the EE and IE of the latter is 100%.