FECUNDITY OF INTESTINAL STRONGYLATA IN HORSES IN CRITICAL CONDITIONS OF CENTRAL YAKUTIA

Horse herd farming based on the year-round pasture management of horses has become one of the main branches of animal husbandry and the basis of the lifestyle and economy of the Yakutia population. Herds are formed according to their sex and age: stallions, mares, and foals are kept in the herd. Helminth infections are widespread among herd horses and are chronic in most cases without pronounced clinical manifestations. Horses seem to be completely healthy from the point of view of the usual visions of the disease. Therefore, no preventive or treatment measures are often applied. In cases of asymptomatic helminth infections (subclinical forms), the huge economic damage caused by them is determined not so much by the death of animals, but it is very difficult to endure wintering in Yakutia with a high invasion degree, and loss of fatness and weight. The Authors of the Article studied the interspecific relationships of equine intestinal nematodes in mixed invasion, and detected changes in the population density of individual nematode species in horses of different age and in different seasons of the year. The Strongylata incidence and infection rate in herd horses was studied based on the results of quantitative coproovoscopic and larvoscopic studies of faeces from herd horses, and on the results of incomplete helminthological dissections on horse ranches of Central Yakutia.