EFFECTIVE DRUG FOR SHEEP OESTROSIS
The article presents the results of production experiment on the Iversan® drug testing with sheep estrosis. The work was carried out on 25 lambs of the North Caucasian breed, with a live weight of 25-35 kg and high estrosis infestation. The lambs were divided into an experimental group (15 animals) and a control group (10 animals). Before administration of the drug and 14 days after the administration, in 5 lambs of experimental group, blood was taken for hematological and biochemical parameters. The Iversan® drug was administrated to the experimental group of animals with water for drinking at a dose of 1 ml per 200 kg of animal weight (200 mcg of Ivermectin per 1 kg of animal weight) individually once. In 14 days after the Iversan<sup>®</sup> drug administration, a clinical examination of sheep from the experimental and control groups was conducted, and it was established that all the sheep from the experimental group had no clinical signs of estrosis, while in the sheep of the control group these clinical signs persisted. During the slaughter of 2 sheep from the experimental group and opening of the nasal passages, the larvae of nasopharyngeal gadfly (Oestrus ovis) were not found. Thus, the Iversan<sup>®</sup> drug in a dose of 1 ml/200 kg of animal live weight showed a high therapeutic effect at the estrosis of sheep.