Some histological, histochemical and ultrastructure studies on the proventriculus mucosa of adult male Japanese quail (Coturnixcoturnix)

Document Type : Original Article

Authors

Department of Histology, Faculty of Veterinary Medicine, Cairo University

Abstract

The current study aimed to maximize the information in the histology of proventricular mucosa of male Japanese quail. The present work carried on ten apparent healthy adult male Japanese quail (Coturnixcoturnix) of average age ranged from (8- 9) weeks and average weight ranged from (250 300gm). The birds were euthanized. Specimens from the proventriculus fixed in 10% neutral buffered formalin and processed for light microscopic examination, another specimens were processed for electron microscope. The present study revealed that the mucosa was thrown into plicae and sulci which lined by simple columnar epithelium. This epithelium showed positive reaction to Periodic acid- Schiff (PAS), Alcian blue, Adehydefuchsin and Best's carminetechniques .With TEM, the cytoplasm of these cells contained rough endoplasmic reticulum, Golgi apparatus, mitochondria and electron dense granules. The lamina propria contained lymphocytic infiltration and lymphatic nodules. Compound tubuloalveolar glandular lobules were located in the submucosa. These glands lined by cuboidal or pyramidal cells which drained into primary duct via secondary and tertiary ducts. With TEM, their cytoplasm contained numerous mitochondria, smooth endoplasmic reticulum, rough endoplasmic reticulum, Golgi apparatus, few electron dense granules and few lipid droplets. Four closed types of endocrine cells were recognized in the glandular epithelium. The muscularis mucosa was formed of longitudinally arranged smooth muscle fibers.

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