preliminary morphobiological studies on the external parasites of sheep in giza governorate

Ectoparasites of sheep and goats in D. Yemen as well other countries are one of the main Factors cav- sing Financial losses due to their effects on livest-ock production as well as the transimission of diff- erent pathogenic agents.The student was doing some investigations on the external parasites others than acarines of sheep and goats in Giza Govenorate.The investigation encluded the incidence and the epidemiology of these parasites according to the var-ious climatical conditions, in addition to the morph- ological characters of the detected species.The most important detected ectoparasites were• different species of lice and flies.Concerning lice infesting goats in Egypt, the present study was considered to be the first study in