title: Hepatic hemosiderosis in red-spectacled Amazons (Amazona pretrei) and correlation with nutritional aspects.
abstract: Alimentary habits of free-living Psittaciformes vary significantly among different species. Amazona pretrei is under risk of extinction and has very specific free-living dietary habits, which are based on Paraná pine seeds. Hemosiderosis is a pathologic process characterized by intracellular accumulation of iron without other evident lesions. It is associated with increased prevalence of infections, neoplasms, and hepatopathies. The purpose of this study was to quantify hepatic hemosiderin deposits in captive A. pretrei and verify their association with nutritional parameters. Liver samples were processed for histopathology and stained with Prussian blue. The sections were analyzed by computerized morphometry to quantify the hepatic hemosiderin deposits. The hepatic hemosiderosis rates showed positive correlation with age and time in captivity. These results suggest that the menus and commercial rations for Psittacidae must be carefully revised.
authors.affiliation: Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Camobi, Santa Maria, RS, Brazil, CEP 97010-491.
authors.forename: Larissa Quinto
authors.initials: LQ
authors.lastname: Pereira
authors.forename: Ricardo de Francisco
authors.initials: Rde F
authors.lastname: Strefezzi
authors.forename: José Luiz
authors.initials: JL
authors.lastname: Catão-Dias
authors.forename: Michele Martins
authors.initials: MM
authors.lastname: Trindade
authors.forename: Rafael Almeida
authors.initials: RA
authors.lastname: Fighera
authors.forename: Glaucia Denise
authors.initials: GD
authors.lastname: Kommers
authors.forename: Maristela
authors.initials: M
authors.lastname: Lovato
mesh_terms: D046708:Amazona; D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D001715:Bird Diseases / Q000209:etiology*; D005260:Female; D006486:Hemosiderosis / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D008107:Liver Diseases / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D008297:Male