Authors : E. Salimi Naghani, I. Pousty and M. Abedi
Abstract: Histogenesis of the abomasum was studied in the one-humped camel (Camelus dromedarius). According to histodifferentiation of the abomasum in fetuses of the camel, they were divided into four groups: group I (5-24 cm Crown-Rump Length (C-RL); 50-140 days); group II (24-30 cm C-RL; 140-160 days); group III (30-36 cm C-RL; 160-178 days); group IV (36-108 cm C-RL; 178-390 days). At 50 days, the abomasum consisted of four layers: the epithelial layer (pseudostratified), lamina propria-submucosa, tunica muscularis and serosa. The muscularis mucosa was observed from 140 days between lamina propria and submucosa in the abomasum to the birth day. The primary lymphatic nodules appeared in lamina propria of cardiac region of the abomasum at 160 days. The epithelium of the abomasum was a mixture of simple columnar and pseudostratified at 176 days in the third group. The whole all epithelium was simple columnar in the last group. The abomasal folds in size, number and in thickness of tunica muscularis layer as well increased throughout prenatal life as the abomasum developed. However, its prenatal developing was later than the abomasum in cow, sheep and goat.
E. Salimi Naghani, I. Pousty and M. Abedi, 2010. Histogenesis of the Abomasum in One-Humped Camel (Camelus dromedarius). Journal of Animal and Veterinary Advances, 9: 1108-1111.