Vol. 11, Special Issue 11 (2022)

Author(s):
Rupam Malakar, Arun Kumar Mandal and Nirmal Kumar Tudu

Abstract:
The investigation was carried out on 30 Haringhata Black breed of chickens divided into five group viz. day old, 15 days, 30 days, 45 days and 60 days old with six birds in each age group. The present research about the histomorphological, histochemical and micrometrical study of the proventriculus of the Haringhata Back chickens revealed that the proventriculus was made up of four distinct histological layers. The tunica mucosa presented various longitudinal mucosal folds of varying height lined by tall columnar epithelium. The proventricular glands in the submucosa varied in shape from oval or round to elongated. A framework of collagen, reticular and elastic fibres supported the glands. Serosa was the outermost layer composed of connective tissue, blood vessels and mesothelium. The thickness of the different layers was most in 60 days old birds whereas it was least in 0 day old birds. The epithelial cell and nucleus showed less variation in height, width and diameter with the progression of age. Histomorphological, histochemical, micrometrical, proventriculus, serosa, mesothelium