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219961

SEASONAL VARIATIONS OF THE DIGESTIVE TRACT OF EGYPTIAN ROCK DOVE, COLUMBA LIVIA: ANATOMICAL, HISTOLOGICAL AND SCANNING ELECTRON MICROSCOPICAL STUDIES

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Last updated: 28 Dec 2024

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Abstract

This work aims to study the effect of seasonal variations on anatomical, histological, and histochemical structures of the digestive tract of Egyptian rock dove (Columba livia). The digestive tract of rock dove consists of oesophagus, crop, stomach, small and large intestine. The regions of the digestive tract of rock dove differ from each other in the type of lining epithelium, the shape of folds formed by these epithelium, the distribution of glands within their layers, finally the thickness of these layers. The oesophagealmucosa is composed of keratinized squamous epithelium which appears thicker in the crop. This epithelium becomes more compressed and converts into simple columnar and cuboidal epithelium to line the glandular and muscular stomach respectively. This simple columnar epithelium also is lining the small and large intestine, caeca and cloaca. Most glands and the goblet cells that are distributed among the mucosa of different regions of the digestive tract indicate the presence of acid and neutral mucopolysaccharide secretions while proteins are observed in the different regions of the digestive tract. The hisomorphometrical studies of the digestive tract of the rock dove during the summer and winter seasons show no significant changes on the morphological and histochemical levels of the digestive tract except the oesophagus region. The present results confirmed that the Egyptian rock dove as a resident bird doesn't often have to face environmental changes.

DOI

10.21608/aunj.2021.219961

Keywords

digestive tract,  histomorphometrical,  rock dove, seasonal

Volume

50

Article Issue

1

Related Issue

30978

Issue Date

2021-06-01

Receive Date

2022-02-16

Publish Date

2021-06-01

Page Start

60

Page End

97

Print ISSN

2812-5029

Online ISSN

2812-5037

Link

https://aunj.journals.ekb.eg/article_219961.html

Detail API

https://aunj.journals.ekb.eg/service?article_code=219961

Order

219,961

Type

Novel Research Articles

Type Code

2,242

Publication Type

Journal

Publication Title

Assiut University Journal of Multidisciplinary Scientific Research

Publication Link

https://aunj.journals.ekb.eg/

MainTitle

SEASONAL VARIATIONS OF THE DIGESTIVE TRACT OF EGYPTIAN ROCK DOVE, COLUMBA LIVIA: ANATOMICAL, HISTOLOGICAL AND SCANNING ELECTRON MICROSCOPICAL STUDIES

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Type

Article

Created At

23 Jan 2023