Morpho-histology of the alimentary canal of pheasant (Phasianus
colchicus)
Benamolaei
Parisa, Banan Khojaste, Seyed Mahdi.
Department of Animal
Biology, Faculty of Natural Science, University of Tabriz, Iran
ABSTRACT
Parisa B, Khojaste
B, Mahdi S., Morpho-histology of the alimentary canal of
pheasant (Phasianus colchicus),
Onl J Vet Res., 23 (6):615-627, 2019. Authors describe morpho-histology of the alimentary canal in Phasianus colchicus. The wall of the entire alimentary canal was
composed of tunicas
mucosa, submucosa, muscularis and serosa/adventitia.
The esophagus had longitudinal folds in transversal section and a thick
non-keratinized stratified squamous epithelium. There were numerous mucous
glands in the lamina propria
with simple columnar epithelium. Crops histology was similar to esophagus, but
had less mucous glands. The muscularis had inner circular and outer longitudinal layers.
The proventriculus was lined by simple columnar
epithelium with numerous submucosal glands in the submucosa. The outermost
layer of the proventriculus was a tunica serosa. The surface of gizzard
revealed a layer of rough cuticle and simple columnar epithelium. There was no muscularis mucosae in the
gizzard but its muscular layer was composed of smooth muscles. The mucosa of
small intestine showed villi of various sizes lined by simple columnar
epithelium. The villi were numerous and well developed in duodenum. The large
intestine revealed mucosal folds and short villi. The caecal
tunica mucosa was folded into plicae rather than villi and tubular glands were
evident. The tunica serosa covered the outer surface of intestinal wall. The
findings are supported by numerous images.
Keywords:
alimentary canal, common pheasant, microscopic anatomy, morphohistology,
Phasianus colchicus.
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