Morphological and Histological Study of Stomach (Proventriculus and Ventriculus) of Adult Partridge (Alectoris chukka) in South of Iraq | ||
| Egyptian Journal of Veterinary Sciences | ||
| Volume 56, Issue 5, May 2025, Pages 885-893 PDF (1.15 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejvs.2024.272697.1972 | ||
| Authors | ||
| Ektifaa Shakir Khayoon* 1; Ali Faris Reshag2 | ||
| 1University of Baghdad/veterinary medicine/Anatomy &histology | ||
| 2University of Baghdad/veterinary medicine/Anatomy &histology | ||
| Abstract | ||
| This study was designed to investigate both histomorphological and histochemical structures of the stomach in the partridge. Twelve healthy birds were collected from local markets at Baghdad province. All the birds were euthanized, their abdomens were dissected, and then their stomachs were identified, photographed in situ. Specimens cut from the gastric wall were fixed as well and then processed for histological and histochemical staining techniques that were H&E, Masson Trichrome, Periodic acid Schiff (PAS) and PAS -Alcian blue (AB) (pH 2.5).Gross findings indicated the presence of a stomach of two divisions that were glandular (proventriculus) and muscular (ventriculus). The proventriculus was elliptical in shape and separated from the next second part by isthmus. The ventriculus appeared circular in shape and normally covered by an amount of adipose tissue. The stomach of partridge was located at the left side of the thoracoabdominal cavity. The luminal surface of proventriculus showed longitudinal mucosal folds with the presence of rows of papillae in area between the end of isthmus and beginning of ventriculus. Ventricular luminal surface was greenish to yellowish in color; it had rough horizontally arranged folds in the center then arranged transversally in the end with presence layer of cuticle. Histologically the gastric wall was constructed by four tunicae (mucosa, submucosa, muscularis and serosa). The luminal surface of stomach was irregular due to presence of openings of superficial glands with the top of papillae. The epithelium was simple columnar invaginated in proventriculus to form superficial and deep glands lined in their basal parts by cuboidal cells. In ventriculus the surface covered by cuticle with absence of muscularis mucosa. Tunica muscularis was very thick composed from three layers in different directions to adapt the gastric functional contraction. Histochemically the epithelium and glandular ducts were reacted positively with PAS due to their neutral mucin composition. | ||
| Keywords | ||
| Partridge; proventriculus; ventriculus; avian stomach; glands | ||
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