title: The effect of Plasmodium gallinaceum on a challenge infection with Ascaridia galli in chickens.
abstract: The effect of a primary infection with the haemoparasite Plasmodium gallinaceum on the establishment of a challenge infection with the nematode Ascaridia galli in chickens was studied. Four groups were infected as follows. Group 1: inoculated intravenously with 10(6) P. gallinaceum-infected erythrocytes on day 0; group 2: orally infected with 500 embryonated A. galli eggs on day 10; group 3: infected with P. gallinaceum on day 0 and A. galli on day 10; and group 3: non-infected control birds. The results of this investigation demonstrates that a primary infection with P. gallinaceum in chickens alters the course of a subsequent infection with A. galli. Thus, an antagonistic effect was seen in which the malaria infection caused a significant reduction on the establishment of the nematode in concurrently infected animals.
authors.affiliation: Department of Population Biology, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark.
authors.forename: J
authors.initials: J
authors.lastname: Juhl
authors.forename: A
authors.initials: A
authors.lastname: Permin
mesh_terms: D000818:Animals; D001197:Ascaridia; D001198:Ascaridiasis / Q000150:complications / Q000401:mortality / Q000469:parasitology / Q000662:veterinary*; D002645:Chickens / Q000469:parasitology*; D005260:Female; D008289:Malaria, Avian / Q000150:complications* / Q000401:mortality / Q000469:parasitology; D010964:Plasmodium gallinaceum; D011201:Poultry Diseases / Q000401:mortality / Q000469:parasitology* / Q000473:pathology; D011897:Random Allocation; D016019:Survival Analysis