Fifteen Kestrel were used in this study regardless to their sex. The results study showed that the pancreas of adult Kestrel (Falco tinnunculus) lies under the right side of the peritoneal cavity, and situated between the descending part and ascending part of the duodenum and has pale pinkish to white pinkish colored and consisted of 3 lobes dorsal (lobus pancreatic dorsalis), middle (middle pancreatic lobus) and ventral (lobus pancreatis ventralis) with well-developed interlobar connections made it difficult to distinguish between the 3 lobes. Histologically the pancreas of adult Kestrel (Falco tinnunculus) was covered by very thin layer of connective tissue with mesothelial cells, Connective tissue septa extended from capsule into parenchyma of pancreas dividing it in to many lobules. These septa were very thin and some of them carried blood vessels distributed all over the pancreas. The exocrine portion was constituted from serous acini with pyramidal shaped cells which had dark rounded nucleus in the middle part of the cell. Acidophilic granules found in the apices of cells. Centro acinar cells found as one or two nuclei in the center of the pancreatic acini. The endocrine portion (islets of Langerhans) was formed from clusters of endocrine cells in shape of oval or rounded pale structures with different sizes. The small one has mean diameter of 40.02±0.9 µm while the large one has diameter of 126.3±3.8 µm. Few endocrine cells were seen distributed as single cells among the pancreatic acini.

The objective of this study was to detect the percentage of Polymorph nuclear cells (PMNs ( from the uterine smears using the local manufactured uterine cytobrush instrument, and to determine the echogenicity the intrauterine fluid by Ultrasonography. Thirty (Arabian) repeat breeder mares were used. Animals were examined through rectal palpation and ultrasound. Mares were divided into 4 groups depending on the results of: 1) the amount of intrauterine fluid using ultrasound; 2) the endometrial samples were collected during estrus cycles, 3) the numbers of uterine epithelial cells and PMNs using locally manufactured cytobrush tool, 4) the number of lymphocytes. The results showed that the incidence of endometritis had significantly related to that age of the animals. The number of PMNs were significantly different between groups. The mean number of PMNs was 1.63±0.23, 3.34±0.18, 4.78±0.26 and 5.26±0.46 in G1, G2, G3 and G4, respectively. The echogenicity of the accumulated fluid in the endometrial lumen was significantly associated with the percentage of lymphocytes. The mean number of lymphocytes was 1.02±0.42 and 1.84±0.37%, in G3 and G4 respectively. This study concluded that the cytobrush technique is rapid, cheap, safe technique and easy to obtain samples from mare's uterus in the field. Consequently, Ultrasound and cytological techniques could be recommended for diagnosis of endometritis in mares.

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     Current investigation was carried out to explore structural developmental changes of the acculus rotundus in indigenous rabbits at different postnatal ages. To conduct that, morphological, histological and morphometrical approaches were employed on 24 rabbits at ages one, ten, fifteen and forty days. The findings indicated that in one day kits, the Sacculus rotundus cannot recognized with the naked eye but in the next advanced ages it appeared as expanded pear-like structure situated at the end of ileum. It opened into the 2nd gyrus at the base of cecum by saccorotundocecal orifice. Because it extends for 1-2 millimeters inside the lumen of the cecum, an annular ridge formed encircles the site of this opening. Length and width of SR was increased significantly by age progression. The main four layers of the alimentary canal were presented in the wall structure of Sacculus rotundus but with apparent variations in its structural constituents and dimensions. Two types of epithelia were recognized in its mucosa, villus epithelium and follicular associated epithelium. The lamina propria was very thick and full of well-developed nodular and diffuse lymphoid tissue alongside the whole circumference of its wall even in the newly born kits. In conclusion, the SR might be considered as primary lymphoid organ in rabbit.

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