1 .24cMds of naturally infeetious Ascaridis ge]li, asxxrding to additive amount of Destornycin A per kg of fJ ivided into four grou of
2.Sing5mg7.5mg&1 0mg. In resulting the ERG. in faorsof 2.5mg group turned negative in 8th week. The 5mg group turned negative in 5th week. The 7.Smg&lOing group turned negative in 4th week. 2.12 chicken of naturally infectious capillaries divided into four groups as above. The result found the residual eggs in kes of 2.5mg group in 8th week yet. The E.P.G in feces of 5 rag group keome negative in 5th week. The 10mg group Iezome negative in 5th week.
3.24 chickens of naturally Ascaridia ge]li, divided into control group and administrative group. The administrative group are given the f1 additive of 705mg of destornycin A per kg of fi. Sampling 2 chickens was anatomi2nl and examined. The residual rasite in intestinal a-aci of chicken decreased gradually in 2nd wee]c and the perasites were disappearing in 4th week
4.Destornycin A has sting bacterial inhibition for E.Coli, Staphyloccccus aua-eus, Salmonella typlicta, Salmonella paratyphi B and Aliigella dysenteria.