Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch

The histogenesis of the primordial oesophagus was studied to determine the period in which the tunics of the oesophagus developed and became functional in the helmeted guinea fowl (Numida meleagris). Eighteen embryos and nine keets were studied at prehatch and posthatch, respectively. Simple columna...

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Main Authors:	Gosomji, Innocent Jonah, Salami, Sulaiman Olawoye, Nzalak, James Oliver, Kawu, Muhammed Umar, Tizhe, Emmanuel Vandi, Gurumyen, Yilzem George, Dung, Edward Christopher
Format:	Online
Language:	English
Published:	Hindawi Publishing Corporation 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5178371/

id	pubmed-5178371
recordtype	oai_dc
spelling	pubmed-51783712017-01-04 Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch Gosomji, Innocent Jonah Salami, Sulaiman Olawoye Nzalak, James Oliver Kawu, Muhammed Umar Tizhe, Emmanuel Vandi Gurumyen, Yilzem George Dung, Edward Christopher Research Article The histogenesis of the primordial oesophagus was studied to determine the period in which the tunics of the oesophagus developed and became functional in the helmeted guinea fowl (Numida meleagris). Eighteen embryos and nine keets were studied at prehatch and posthatch, respectively. Simple columnar epithelium surrounded by mesenchymal cells was obvious at the 8th day of embryonic development. By the 19th day of embryonic development, the four tunics, tunica mucosa, submucosa, tunica muscularis, and tunica adventitia/serosa, were beginning to differentiate from the mesenchymal cells and also the primordial oesophageal glands appeared as clusters of cells that invaginate from the epithelium. By the 27th day, the tunics were clearly differentiated and the primordial glands were fully developed as evident with positive reaction to Periodic Acid Schiff (PAS). The tunics of the muscularis were not well developed till at posthatch. This study therefore concludes that the primordial oesophagus is active at the late incubation due to mucin secretion by mucous glands but fully functional at posthatch since the tunica muscularis is completely developed at posthatch. Hindawi Publishing Corporation 2016 2016-12-08 /pmc/articles/PMC5178371/ /pubmed/28053804 http://dx.doi.org/10.1155/2016/9827956 Text en Copyright © 2016 Innocent Jonah Gosomji et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Gosomji, Innocent Jonah Salami, Sulaiman Olawoye Nzalak, James Oliver Kawu, Muhammed Umar Tizhe, Emmanuel Vandi Gurumyen, Yilzem George Dung, Edward Christopher
spellingShingle	Gosomji, Innocent Jonah Salami, Sulaiman Olawoye Nzalak, James Oliver Kawu, Muhammed Umar Tizhe, Emmanuel Vandi Gurumyen, Yilzem George Dung, Edward Christopher Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch
author_facet	Gosomji, Innocent Jonah Salami, Sulaiman Olawoye Nzalak, James Oliver Kawu, Muhammed Umar Tizhe, Emmanuel Vandi Gurumyen, Yilzem George Dung, Edward Christopher
author_sort	Gosomji, Innocent Jonah
title	Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch
title_short	Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch
title_full	Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch
title_fullStr	Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch
title_full_unstemmed	Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch
title_sort	histogenesis of the oesophagus of guinea fowl (numida meleagris) at prehatch and posthatch
description	The histogenesis of the primordial oesophagus was studied to determine the period in which the tunics of the oesophagus developed and became functional in the helmeted guinea fowl (Numida meleagris). Eighteen embryos and nine keets were studied at prehatch and posthatch, respectively. Simple columnar epithelium surrounded by mesenchymal cells was obvious at the 8th day of embryonic development. By the 19th day of embryonic development, the four tunics, tunica mucosa, submucosa, tunica muscularis, and tunica adventitia/serosa, were beginning to differentiate from the mesenchymal cells and also the primordial oesophageal glands appeared as clusters of cells that invaginate from the epithelium. By the 27th day, the tunics were clearly differentiated and the primordial glands were fully developed as evident with positive reaction to Periodic Acid Schiff (PAS). The tunics of the muscularis were not well developed till at posthatch. This study therefore concludes that the primordial oesophagus is active at the late incubation due to mucin secretion by mucous glands but fully functional at posthatch since the tunica muscularis is completely developed at posthatch.
publisher	Hindawi Publishing Corporation
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5178371/
_version_	1613811866777157632

Histogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch

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