Stereological Study of the Esophageal Tissue Structure in Male and Female Bakhtiari Goat

The aim of this study was to evaluate histometrical and stereological properties of the different tissue layers in male and female goats. To study the microscopic structure of the goat esophagus by stereological method، the eight healthy adult goats from both sexes were selected and the cervical region was dissected and esophagus removed. The obtained samples were fixed in 10% buffered formalin solution and then prepared tissue sections، stained with hematoxylin and eosin and studied using light microscopy. Results showed that there are significant variation in micrometry thicknesses of the submucosal and muscular layer at the cervical and thoracic regions (P<0. 05). The stereological results showed that mean volume of the esophageal muscular layer was significantly greater in male than female، but in other layers significant differences between both sexes was not observed (P>0. 05). Although morphometrical results showed that there are significant variations in different layers of the esophagus tissue، but stereological results showed no significant difference.