Histopathological Study of Infection with Parasitic Intestinal Helminthes on Passer domesticus in Tikrit City, Iraq

Abstract

            During the period from September 2013 till the end of July 2014, a total of 340 birds Passer  domesticus   were  collected .  The  study   revealed   in   exam   the   sectional  tissue  of  intestine in infected  birds  which  showed   a   high effect  compared   with  the  uninfected  birds . These effects were  summarized by the destruction in most of intestinal  villi  and  atrophy  of others  which  appeared   as   webby   filaments   with  each  other  and  their  cells  have cubidal form  and  there   were   a  cystic  structure  of   parasite   in   the   lamina   propria .  Their    cells    were   compacted     forming  a   high   vacuole     from     the     basal     membrane   surrounding    these    glands . The  lumen  of intestine is fuelled by the epithelial cells and Red blood cells .     The pathological changes were found to depend on number and size of parasites and present of hooks , Occurrence of the histological  changes was  therefore often Synchronised with hosts that infective with all  species of  parasites .