Soha A. Soliman, Yasser A. Ahmed and Mohammed Abdelsabour-Khalaf
الملخص العربي
The current study conducted a careful
description of the histological events during the embryonic
development of quail stomach. Daily histological specimens
from the quail stomach from day 4 to day 17 post
incubation were examined by light microscopy. The
primitive gut tube of the embryonic quail appeared at day 4
post incubation. The gut tube consisted of an endodermal
epithelium of pseudostratified type, surrounded by
splanchnic mesenchyme. The prospective glandular
epithelium invaginated at day 5 in the proventriculus and
gradually developed to prospective proventricular glands.
The muscular coat became distinguished at day 7 and day 8
in the proventriculus and gizzard, respectively. Transformation
into simple columnar epithelium occurred in both
proventriculus and the gizzard at day 12. The gizzard
epithelium gave rise to tubular invaginations also at day 12.
Canalization of the gizzard tubular glands was recognized
at day 14. By day 15, the proventricular surface epithelium
invaginated in a concentric manner around a central cavity
to form immature secretory units that contained inactive
oxyntico-peptic cells. The mucosal folding in the gizzard
appeared at day 15 to form plicae and sulci. The wall of the
proventriculus and gizzard at day 17 acquired histological
features of post-hatching birds.
ياسر عبد الجليل أحمد | Yasser A. Ahmed | 10544