Studies On Some Parasitic Helminths In Domestic Birds In Assiut Governorate

The problem of parasitic infection represents one of the major factors that affect domestic birds in almost allparts of the world • Parasitic helminths of birds may be acause of stunted growth, emaciation, weakness and death of laying hens. Production is markedly lowered or ever.ent;J..rly S”ColJped. as a mac c er of fact, parasites lowers their viability and result in an increase of their suscep- tibility to other diseases with subsequent rise in their mortality. The final outcome is a great financial lossunreover some helminthinfect man constituting a public health problem.It was the aim of the present work to reveal some asp- ects of this problem in Assiut Governorate and to contrib-ute to its better understanding. The programe of study ,included a survey of the helminth fauna and their incidenceand distribution in various host species. In addition some experimental studies were perforffied to reveal the effect of some external factors on developm- ental stages of one of the most common helminths parasit-ising domestic birds.As a resul”G of this work, certain points of interest were revealed.