Anatomical and histological study of the magnum in the pigeon Columba domestica

Abstract

Most of the study for the Columba domestica anatomically and histologically. In this study , used five birds of the healthy and sedimentary female were used under standard breeding conditions. The anatomical study included the study of the position and shape of the oviduct and the magnum at the resting stage as well as the study of the length of the total oviduct and the length of the magnum. In the histological study, 10% Formalin Formation and 3 pigments, Harris Hematoxylin-Eosin, Van Geisson, and Periodic Acid Schief (PAS) stains were used to show different histological components and measured the highest of the mucosal fold and thickness of muscularis . In the resting stage, the oviduct appeared resting stage in a convoluted tube whose walls are different from the thicknesses and extend from the ovary to the claoca and located on the left side of the abdominal cavity and are dorsally connected with the ventral surface of the kidneys and the dorsal wall and are lateraly connected with the body of lateral wall, oviduct found suspended to the roof of the abdominal cavity by the dorsal ligament the length of the ovary 14.94 cm length while the total length of the magnum 4.18± 0.09. Histologically, the mucousal folds of the magnum are large and occupy the cavities of the magnum, They appear to carry many secondary and tertiary folds and lined with a pseudostratified ciliated epithelial cells and consist of columnar cell and secretory cell, At the resting stage cannot distinguish the parts of the oviduct , including the most easily and the mucosal layer and lamina properia development is not clear.