Biological potential cestodes of Echinococcus granulosus in dogs and sheep in the Republic Dagestan

Abstract

The article is devoted to the study of the biotic potential and the role of the cestode Echinococcus granulosus in the infection of shepherd dogs and sheep in the republic. It has been established that the average intensity of invasion (II) of the causative agent of echinococcosis in shepherd dogs in the surveyed areas (Kizlyarsky, Laksky, Nogaysky, Sergokalinsky, Suleiman – Stalsky, Khasavyurt, Tsumadinsky, Shamilsky, etc.) is 1768 ± 245; 2924 ± 369; 3456 ± 382; 4683 ± 597; 2249 ± 321; 1870 ± 263; 2633 ± 352; 2149 ± 286 specimens / specimen. Infection of adult sheep with echinococcosis occurs in all surveyed areas, with fluctuations in the intensity of invasion (II) from 14.8 ± 1.3 to 21.3 ± 1.9 specimens / specimen, on average 17.56 ± 1.53 specimens. /individual. In sheep of all age groups, with a complete helminthological autopsy, in 1 ml of echinococcal fluid, fertile larvocysts were found in an amount of 20.36 ± 1.15 specimens / individual, except for young sheep, up to 1 year old. In sheep under the age of 2 years, fertile larvocysts of Echinococcus granulosus are found in the amount of 9.2 ± 0.41 specimens / specimen 0.83 ± 0.076 thousand specimens. The average number of fertile larvocysts found in 1 ml of fluid in sheep at the age of up to 3 years is 15.8 ± 0.93 specimens / individual and 1.15 ± 0.098 thousand specimens; up to 4 years old – 20.5 ± 1.17 specimens / individual and 1.92 ± 0.17 thousand specimens; up to 5 years – 27.3 ± 1.69 specimens / individual and 2.58 ± 0.26 thousand specimens; up to 6 years old – 36.7 ± 1.88 specimens / individual and 3.06 ± 0.49 thousand specimens. These data indicate an increase in the role and activity of the ovine variant of the causative agent of echinococcosis Echinococcus granulosus.