Abstract
New data were obtained when studying the characteristics of the regional pathology of esophagostomosis in the North Caucasus region, taking into account the breed and age of the sheep. The research materials were sets of intestinal sections (90 sets each) and feces samples (300 samples each) of North Caucasian of meat-wool and Karachay breeds. In work the method of full helmintologic of opening according to K.I. Scryabin to account for nematodes of the genus Oesophagostomum, of as well as methods of coprolarvoscopy to account for the number of larvae in the feces. The determination of the species of nematodes was carried out according to the Kapustin determinant. Esophagostomosis in Kabardino-Balkaria is an enzootic invasion with coverage of 44.44–61.11% of the sheep population. The intensity of infection by nematodes of the genus Oesophagostomum ranges from 110.3±12.8 to 303.53±28.20 ekz. / head. In lambs up to 1 year, the EI of esophagostomosis was 63.33% with II – 328.6±28.3 ekz. / head; in Karachai lambs, 43.33% and 212.4±19.2 ekz. / head, respectively; in young sheep 1–2 years, the EI of esophagostomosis was 80.00% with II – 406.3±39.9 ekz. / head; in the Karachai breed – 63.33% and 289.6±25.7 ekz./ head. Conclusion. Esophagostomy of the most susceptible sheep of all ages of the North Caucasian meat-wool breed compared to Karachai, which is associated with the characteristics of the range and ecology. Esophagostomy, regardless of the breed, lambs up to 1 year old and young sheep of 1–2 years old are ill, which should be used when predicting the epizootic situation in the subjects of the Russian Federation.
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