ABSTRACT
We evaluated the histomorphometry of the eye structures (cornea, retina, choroid, and sclera) of 13 adult free-living common kestrels ( Falco tinnunculus). Birds included in the study were euthanatized because of severe trauma from a motor vehicle injury. The eyes were enucleated immediately after euthanasia, fixed in 10% buffered formalin, and decalcified. The right eyes were cut vertically (dorsoventrally) and the left eyes cut horizontally (temporonasally). Tissues were processed, stained with hematoxylin and eosin, and evaluated by an image analysis software. The thicknesses of the diverse corneal layers were measured at 3 points; 2 at the peripheral region (A and C) and one at the central region (B). The thicknesses of the retina, choroid, and sclera were evaluated at 6 different positions. Measurements of the left and right eyes of the male and female birds were compared. The median thicknesses of the cornea at the peripheral points were 210.78 (A) and 197.79 (C) µm, and 129 µm at the central point (B). The thickness of the cornea did not differ significantly between males and females or between right or left eyes. The mean thicknesses of the retina, choroid, and sclera were 91.13, 20.74, and 92.8 µm, respectively. The thickness of the choroid and sclera did not differ significantly between the sexes or between the right and left eyeballs. The retinas of the females were significantly thicker than those of males at the points in the fundus of the eyeball, near the insertion of the pecten (optical nerves).
Subject(s)
Eye/anatomy & histology , Falconiformes/anatomy & histology , Animals , Animals, Wild , Female , MaleABSTRACT
Anomalias congênitas do coração e de grandes vasos estão entre as mais comuns encontradas em animais, porém são raras em eqüinos. Este relato descreve uma anomalia cardíaca que apresenta confluência entre a parede da aorta e do tronco pulmonar, ramificação da veia cava caudal no átrio esquerdo com presença de válvula e conseqüentemente posição errônea do coração na cavidade torácica de um potro da raça Quarto-de-Milha encontrado morto após o nascimento. O diagnóstico foi realizado pela associação dos achados macroscópicos durante a necrópsia e o exame histopatológico realizados no Curso de Medicina Veterinária- UNESP-Araçatuba.
Congenital anomalies of heart and large vessels are among more common found in animals, however rare in horses. This survey describes a cardiac anomaly that presents confluence between aorta wall and lung trunk, ramification of caudal cava vein in left atrium with presence of valve and consequently erroneous position of heart in thoracic cavity of one foal found dead after birth. The diagnostic was carried out for macroscopic finds association during the necropsy and histopathologic exams carried out at School of Veterinary Medicine Unesp Araçatuba.
