a cross-sectional study of helminths in rural scavenging poultry in tanzania in relation to season and climate.a cross-sectional study on the prevalence of helminths in rural scavenging poultry on six hundred adult chickens selected randomly from six villages in the morogoro region, tanzania during the wet and the dry seasons, was conducted. the trachea and gastrointestinal tract of each bird were examined for the presence of parasites. all chickens were infected with one or several species of helminths, the average being 4.8 +/- 1.7 helminths per chicken during the wet season and 5.1 +/- 1.8 during the ...19979271471
mortality in mute swans in southern ontario associated with infestation with the thorny-headed worm, polymorphus boschadis. 1978698906
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