CONTROL OF PARASITES AND ENVIRONMENTAL-IM PACT

Chemical methods continue to be the primary means for control of paras ites in medicine and veterinary medicine. Environmental concerns are r aised mainly in the control of free living stages of parasites, interm ediate hosts, vectors of diseases and in control of sanitary pests. Si milarly, the type of application in case of sheep-dips and spraying of acaricides and insecticides in poultry houses against chicken mites i s problematical. The now available bolus with ivermectin may cause a s tronger impact on the cattle dung fauna and subsequent degradation of the dung as already known after injection and pour on.