Efficacy of the supramolecular complex of Fenbendazole against Nematodes in a commission and Production test

Abstract

The purpose of the research is determining the efficacy of the supramolecular complex of fenbendazole (SMCF) based on the nano-sized supramolecular delivery system with polyvinylpyrrolidone (PVP) against nematodes in sheep in a commission and production test. Materials and methods. A commission test was carried out at Izmailov LLC in the Krasnoarmeysky District of the Samara Region in August 2019. The SMCF at a dose of 2.0 mg/kg by the active substance was given to sheep (30 animals) of different age. The substance of fenbendazole was used as the major drug at a dose of 5.0 mg/kg in 20 sheep. A group of 20 sheep who were not given the drug was a control group. The drug efficacy was recorded by the flotation method according to results of the coproovoscopic studies of sheep before and 16 days after the drugs were administered. The drug efficacy was calculated by a “control test”. The production test of the SMCF in gastrointestinal strongylatosis of sheep was carried out on 120 wether hoggs at the same farm. The SMCF was prescribed to sheep once at a dose of 2.0 mg/kg by the AS in a mixture with 0.3 kg of oatmeal stock feed (per animal) given for the whole group. The efficacy of the SMCF was recorded according to the results of the coproovoscopic studies before and 15 days after deworming. Results and discussion. In the commission test of 70 sheep with combined infection, the SMCF with PVP at doses of 3.0 and 2.0 mg/kg by the AS showed 98.7% effectiveness against Nematodirus infection and 99.2% activity against other types of gastrointestinal Strongylata. In the production test, the SMCF at a dose of 2.0 mg/kg by the AS showed a 99.1 % effect against nematodirosis and 98.8% against other gastrointestinal strongylatoses.