title: Cryptosporidiosis in four cockatoos with psittacine beak and feather disease.
abstract: Cryptosporidiosis was diagnosed in 4 cockatoos with psittacine beak and feather disease. Three of the birds had cryptosporidiosis confined to the epithelium covering the bursa of Fabricius. One bird had generalized parasitism of the small intestine, large intestine, and bursal epithelium. All of the birds had intermittent to protracted diarrhea before death. Presumably, acquired immunodeficiency from psittacine beak and feather disease promoted establishment of cryptosporidiosis and other secondary diseases including septicemia, peritonitis, chlamydiosis, and mycotic ventriculitis.
authors.affiliation: Department of Veterinary Pathology, College of Veterinary Medicine, University of Georgia, Athens 30602.
authors.forename: K S
authors.initials: KS
authors.lastname: Latimer
authors.forename: W L
authors.initials: WL
authors.lastname: Steffens
authors.forename: P M
authors.initials: PM
authors.lastname: Rakich
authors.forename: B W
authors.initials: BW
authors.lastname: Ritchie
authors.forename: F D
authors.initials: FD
authors.lastname: Niagro
authors.forename: I M
authors.initials: IM
authors.lastname: Kircher
authors.forename: P D
authors.initials: PD
authors.lastname: Lukert
mesh_terms: D000818:Animals; D001502:Beak / Q000473:pathology; D001715:Bird Diseases / Q000473:pathology*; D002060:Bursa of Fabricius / Q000469:parasitology; D003457:Cryptosporidiosis / Q000150:complications* / Q000473:pathology; D003458:Cryptosporidium / Q000648:ultrastructure; D005241:Feathers / Q000473:pathology; D005260:Female; D007422:Intestines / Q000469:parasitology; D008855:Microscopy, Electron, Scanning; D011563:Psittaciformes; D014777:Virus Diseases / Q000150:complications / Q000473:pathology / Q000662:veterinary*