Therapeutic Efficiency of Domestic Moxidectins in the Cases of Dog's Dirofilariosis

The purpose of the research is to determine the therapeutic efficiency of the moxidectin-based domestic anthelmintics and develop protocol of medical and preventive activities in dog's dirofilariasis under the conditions of Central Black Earth Region of Russia. Materials and methods. Blood from ill dogs infected naturally with both species of dirofilariases that was tested for presence of helminths' larvae by Millipore® (Ireland) membrane filter method served as the material for the research. Experimental groups were formed out of 76 infected with dirofilariasis dogs aged 1-14 years under the principle of analogs to determine the therapeutic efficiency of moxidectin-based domestic anthelmintics. Drugs weren’t administered into intact animals of the first group (n = 21). MKTc Ankir-B® in the dose of 500 mg per animal was administered orally to animals of the second group (n = 19) as placebo. Inspector Total C anthelmintic was administered in the single dose of 2.5 mg per kg of body weight to the third group of dogs (n = 19) epidermally, Helmimax anthelmintic was administered in the single dose of 0.25 mg per kg of body weight orally to animals of the fourth group (n = 17). During experiments animals were examined clinically and hemolarvoscopically before administration of drugs and on the 3rd, 14th, 30th, 45th and 60th day after administration. Results and discussion. Inspector Total C anthelmintic in the dose of 2.5 mg per kg according to an active substance in the form of spot-on and Helmimax anthelmintic in the dose of 0.25 mg per kg according to an active substance in single administration in dogs infected with Dirofilaria immitis and D. repens species dirofilariasis have 100 % microfilaricidal efficiency. Anthelmintics do not change physiological parameters, do not cause side effects and well tolerated by animals. It should be noted that drugs therapeutic action starts on the third day after treatment regardless of the infection intensity and germ's species. Complete demolition of dirofilariasis adult stages are achieved in chronic administration during 6 months (once per month).