A STUDY ON THE INFESTATION WITH PARAMPHIS TOMIDES IN EQUIDS IN EGYPT

The investigation of 156 donkeys in the area of the veterinary faculty of the Tanta University in Kafr El-Sheikh showed that 49 animals (31. 41%) were infected with trematodes, 34 donkeys (21.80%) served as host s for Gastrodiscus aegyptiacus, 22 (14.10%) were infected with Fasciol a gigantica und 7 (4.49%) with both trematodes. 6 of 40 examined horse s (15.0%) showed monoinfections with G. aegyptiacus only. Because of t he fragmentary knowledge on these paramphistomides of equids, some asp ects concerning the morphology, pathology and clinical symptoms, diffe rential diagnosis, occurrence, host specificity as well as therapy are discussed on the basis of the results from the central Nil delta. Fro m now on further investigations are concentrated on the regional occur rence, frequency of infection of various hosts, seasonal changes of th e excretion of eggs and chemotherapeutical possibilities.