THE DISTRIBUTION OF NEMATODES TOXOCARA CANIS WERNER (1782) AMONG DOGS

The research purpose is to study the degree of the Toxocara canis nematode infection in dogs in Karakalpakstan, the Ferghana Valley and the Kashkadarya Region, as well as to analyze seasonal and age dynamics of the invasion. The research work was carried out in 2020–2023. A complete helminthological dissection of the intestines was carried out for 59 dogs (28 from Karakalpakstan, 21 from the Ferghana Valley and 10 from Kashkadarya) and feces were examined from 143 dogs (76 from Karakalpakstan, 56 from the Ferghana Valley, and 11 from Kashkadarya). Out of 59 dissected dogs, 36 (61.02%) were infected with the nematode Toxocara canis; the intensity of invasion was 11.2±0.6 specimens. The study of feces from 143 dogs found that 31.8% of them (16.2% in rural areas, and 43.6% in cities) were infected with Toxocara. It has been established that the infection of dogs with Toxocara depends on their age, in particular, 52% in dogs up to 6 months; 31%, from 6 months up to a year; 17.6%, from a year to 3 years; and 1.4%, over 3 years. A high degree of Toxocara canis infection in dogs was observed in all seasons of the year, especially in summer. The conducted studies show that the course of the epizootic process in this invasion occurs on the basis of a certain pattern.