| trichurid nematodes in ring-necked pheasants from backyard flocks of the state of rio de janeiro, brazil: frequency and pathology. | the present investigation is related to the frequency of infection and to the gross and microscopic lesions associated to the presence of trichurid worms in 50 ring-necked pheasants (phasianus colchicus) from backyard flocks in the state of rio de janeiro, brazil. in the investigated birds, the overall infection rate was of 74%, with the presence of eucoleus perforans with 72% of prevalence and 21.2 of mean intensity, in the esophageal and crop mucosa and rarely in the junction of the proventric ... | 2004 | 15654428 |