Anatomical and Histological study of the Small intestine in See-see (Ammoperdixgriseogularis)

The importance of anatomical and histological studies of the small intestine in birds is for autopsy examinations and pathological changes in infectious and metabolic diseases. The aim of this study was to investigate the morphometric and morphological features of small intestine in See-see. See-see is a kind of partridge that can be found in large areas of Iran. For this research, 7 male and 7 female partridges were randomly selected. Moreover, for histological study, tissue samples were obtained from 3 males and 3 females and were stained with hematoxylin and eosin. The small intestine in See-see contained 61% of the length of the gastrointestinal tract and consisted of 3 distinct sections of the duodenum, the jejunum and the ileum. The duodenum was a U-shaped ring and the jejunum had 4 to 5 small loops. Histologically, the small intestine has many villi in order to create maximum surface to absorb food and goblet cells were observed in all three sections. Although the number of cells and the height of the villi were diverse in different parts of intestine. The submucosa was also a thin layer in all sections and was with no lymphoid structure. The results show that the anatomical and histological structures of duodenum, jejunum and ileum in see-see, despite the slight differences in histomorphology, is similar to birds.