Features of the histological structure of the mandibular salivary gland of a goat Anglo-Nubian breed

Abstract

The capture of food, the process of chewing, the act of swallowing play an important role in the nutrition process. The mandibular salivary gland is located in the interdigital space, caudally partially covered by the parotid salivary gland. Its duct runs along the rostral and ventral margin and along the medial surface of the hyoid gland to the hyoid wart, where it opens. The mandibular salivary gland is responsible for the production of saliva, which flows through the duct into the oral cavity. Saliva plays an important role in the chewing process: wetting food, enveloping it in a food lump. The quality of an animal's life and productivity depend on the condition of the oral cavity organs and their functioning.
The purpose of the study is to study the features of the histological structure of the oral cavity organ (mandibular salivary gland) of the Anglo–Nubian goat breed. 7 heads were taken and materials for histological examination were selected. The cadaverous material was obtained from a farm located in the Moscow region. Sections 5-7 microns thick were made, which were stained with hematoxylin and eosin and trichrome by Masson. Some of the sections were stained with Alcyan blue (pH 2.5), followed by pre-staining with Mayer hematoxylin, and Schiff-iodic acid according to McManus. It has been established that the Anglo-Nubian goat is characterized by patterns of histological structure of the mandibular salivary gland common to mammals. The mandibular salivary gland is of a mixed type, has an alveolar-tubular structure. The mandibular salivary gland belongs to the extramural glands and secretes a mixed secret. Groups of serous secretory cells cover the mucous part of the terminal section from the outside in the form of a half moon.