EN
The studies were carried out in an experimental pig farm on 402 animals with Thuridan (spore of delta-endotoxin complex of Bacillus thuringiensis kurstaki). It was applied orally, as feed additive in a concentration of 0.1 and 0.5% for three current days. The efficacy of Thuridan was established with the use of fly-catchers which were hung in the same places – once before and three times after Thuridan had been used. After 3 application of Thuridan the number of flies decreased by 88%.