HEMATOLOGIC REFERENCE INTERVALS FOR THE ORANGE-WINGED AMAZON (AMAZONA AMAZONICA) KEPT AT A WILDLIFE MANAGEMENT ESTABLISHMENT IN THE AMAZON BIOME, PARÁ, BRAZIL

Resumo

Amazona amazonica, popularly known in Brazil as curica (Orange-winged Amazon), belongs to the order Psittaciformes and has a broad distribution across South America, occurring in all regions of Brazil. Although this species is frequently presented to veterinary care centers, hematologic data remain scarce, and hematologic reference intervals are essential to guide clinical interventions, monitor individuals under human care, and provide benchmarks for research. To establish hematologic reference intervals for the Orange-winged Amazon (Amazona amazonica) maintained at a wildlife management facility in the Amazon biome, state of Pará, Brazil. Blood samples were collected from 32 clinically healthy adult A. amazonica. Hematologic parameters were determined using manual and spectrophotometric methods. Reference intervals were computed with 90% confidence, and outliers were excluded. Mean values for hemogram variables were as follows: erythrocytes, 2.42 million/µL; hemoglobin, 15.92 g/dL; hematocrit, 50.31%; MCV, 205.47 fL; MCH, 66.73 pg; MCHC, 31.7%; total leukocytes, 6,281.4 cells/µL; heterophils, 2,671.1 cells/µL; lymphocytes, 3,452.27 cells/µL; basophils, 22.63 cells/µL; monocytes, 106.41 cells/µL; thrombocytes, 29.44/µL; total plasma protein (TPP), 6.71 g/dL. Cellular morphological features were similar to those described for other psittacines. This study is the first to determine hematologic reference intervals for A. amazonica kept under managed care in the Amazon biome and may serve as a reference for conspecifics maintained under similar conditions.

Keywords: Conservation biology. Hematology. Avian medicine. Psittacines. Avian health.