Internal-parasitic diseases are one of the most important diseases of  ruminants in the midhills and tropical plains <Terai> and goats in Naldung  (altitude    3500'-6500' a.s.l) were determined using flotation and sedimentation technique from randomly selected animals. Incidence of liverfluke was high(68%) in buffalo, medium <51%) in cattle and low <17%) in goats whereas  strangyloides    incidence was higher (69%) in the later species. Neaascaris infection were in the order of 18% and 7% in  cattle and buffalo respectively when whole population  was considered. In cattle and buffalo calf the incidence was 37% and 38%, respectively.  Estimates of economic losses of calf mortality due to Neoascarisinfection in Nepal were made which came to 0.993 million US $ per year. The   incidence of other parsites and their effect on animal's productivity  is also discussed in the light of present knowledge.

Internal-parasitic diseases are one of the most important diseases of  ruminants in the midhills and tropical plains <Terai> and goats in Naldung  (altitude    3500'-6500' a.s.l) were determined using flotation and sedimentation technique from randomly selected animals. Incidence of liverfluke was high(68%) in buffalo, medium <51%) in cattle and low <17%) in goats whereas  strangyloides    incidence was higher (69%) in the later species. Neaascaris infection were in the order of 18% and 7% in  cattle and buffalo respectively when whole population  was considered. In cattle and buffalo calf the incidence was 37% and 38%, respectively.  Estimates of economic losses of calf mortality due to Neoascarisinfection in Nepal were made which came to 0.993 million US $ per year. The   incidence of other parsites and their effect on animal's productivity  is also discussed in the light of present knowledge.