Histomorphogenesis of pancreas in ostrich embryo (Struthio camelus)

Document Type : Research Articles


1 Ferdowsi University

2 Ferdowsi University of Mashhad

3 Ferdowsi university


The purpose of this study was evolution of pancreas in ostrich. The study was done on 24 incubated eggs of ostrich embryo on 10, 13, 16, 22, 26, 30 and 36 days of prehatching and 1 day of post hatching life. The histological stains such as haematoxylin eosin (H&E), gomori and Toluidine blue were used for this study. On 13th day of incubation the primary pancreas was developed near the liver and duodenum and it was composed of one part. The pancreas was consisted of undifferentiated epithelial cells, connective tissue, non -organized ducts and blood vessels. On 16th day the pancreas was composed of dorsal and ventral lobe with the similar structure to 13th day. On the 22th day, the zymogen granules were evident in developing exocrine part. By aging the level of connective tissue and ducts were decreased and the acinar cells were increased. On 1th day after hatching the hepatocytes vacuolated severely and pancreatic islets were appeared.


Eurell, J.A. and Frappier, B.R. (2006) Text book of veterinary histology (Dellman). 6th edn . Blackwell publishing Ltd.
Githens, S. (1993) Differentiation and development of the pancreas in animals. Chapter 3, 2nd edition, Raven press ltd, New York.
Gradwohl, G. (2006) Development of endocrine pancreas. Journal of Diabetes and Metabolism 32(5): 532-533.
Krivova, S.Y., Proshchina, A.E., Barabanov, V.M. and Saveliev, S.V. (2012) Development of the islets of Langerhans in the human fetal pancreas. Chapter 2, nova science publisher 53-87.
Manakova, E. and Titlbach, M. (2007) Development of chick pancreas with regard to estimation of the relative occurrence and growth of endocrine tissue. Journal of Anatomia Histologia Embryolgia 36: 127-134.
Mansouri, S.H., Gholami, H. and Musavi, Orimi, G.H. (2006) Histomrphometrical study of pancreas in mehraban female sheep. Iranin Journal of veterinary research 7(2): 13-19.
Mobini, B. (2011) Histological study of pancreas of Goose (anser albiferons). Journal of Veterinary research forum 2(1): 25-29.
Simsek, N. and Alaby, B. (2008) Light and electron microscopic examination of the pancreas in quails (Coturnix coturnix Japonica). Journal of Revuede medecine veteterinary 4: 198-206.
Stornelli, M.R., Ricciardi, M.P., Miragliotta, V., Coli, A. and Giannessi, E. (2006) Morpho- structural study of the pancreas and pancreatic duct in ostrich (Struthio camelus L.). Journal of Acta vetrinaria brno 75: 157-160.
Titlbach, M. and Manakova, E. (2007) Development of rabbit pancreas with particular regard to the argyrophilic cells. Journal of Acta vetrinaria brno 76: 509-517.
Wessels, N. K. and Cohen, J. (1967) Early pancreas organogenesis, morphogenesis, tissue interaction and mass effect. Journal of Developmental Biology 15(23): 237-270.