CATTLE HYPODERMATOSIS IN SOUTH TAJIKISTAN

Abstract

The article presents data on the infestation of cattle by subcutaneous gadflies in the southern regions of Tajikistan. It has been established that two species of subcutaneous gadfly parasitize in cattle – Hypoderma bovis and Hypoderma lineatum. The prevalence of gadfly larva in cattle is 11.4–31.1% and the intensity of infection is 2–21 specimens, and Hypoderma lineatum larva is 4.6–11.3% and the intensity of infection is 5–15 specimens of connective tissue capsules per animal, respectively. Connective tissue capsules Hypoderma bovis in the back area of animals appeared in late January and early February, and Hypoderma lineatum in late December and early January. Development of larvae under the skin of animals lasted on average 50–55 days. The release of the Hypoderma lineatum larva was noted in the second and third decades of February, and the gadfly in mid-March. The flying of the Hypoderma lineatum imago is from mid-April to the second decade of June, and the gadfly from the second decade of May to early July at an optimal air temperature of 18–25°C. This is due to the fact that there are favorable natural and climatic conditions in these areas for the development of larvae in the pupation stage and a fairly dense population of animals (cattle) per a hectare of pasture.