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Macroscopic and Microscopic Study of the Mandibular Salivary Gland of Black Bengal Goats

S. M. A. Rauf
Department of Anatomy and Histology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. R. Islam
Department of Anatomy and Histology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. K. Anam
Department of Anatomy and Histology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The gross anatomy and microscopic structures of the mandibular salivary gland of 15 Black Bengal goats of either sex and different ages were carried out during the period from January 1999 to December 2000. The mandibular salivary gland was irregularly triangular in shape and was situated ventral and caudal part of the angle of the mandible and partly covered by the ventral part of the parotid gland. The gland was cream colored in fresh condition and the lobules were coarser and less compact in texture. The mandibular duct left the gland near the middle of the crania-dorsal border and opened into the caruncula sublingualis with the sublingual duct in common. The average length of the duct was 11 cm. The branches of external carotid, lingual and occipital arteries supplied the mandibular salivary gland. The mandibular gland was drained by the lingofacial and lingiual veins and occasionally by the laryngeal vein. It was mixed tubulo-alveolar gland and consisted to numerous Jobes and lobules supported by connective tissue capsule. The mixed alveoli were more than the isolated serous and mucous alveoli.

Keywords: Mandibular salivary gland, Macroscopic, Microicopic, Black Bengal goats

Location: Villages close to the Bangladesh Agricultural University campus, Mymensingh and reared in the departmental goat house.

Start Date: 00-01-1999

End Date: 00-12-2000

Program Area: Animal Health and Management

Commodity: Goat

Objectives:

The present work has been carried out to study of topography, color, blood supply and microscopic structure of the mandibular salivary gland of Black Bengal goats of different ages in order to detect a variation of normal and abnormal conditions of the gland.

Methodology:

Fifteen Black Bengal goats of different ages and sexes were used for the gross and microscopic study which were purchased from the villages close to the Bangladesh Agricultural University campus, Mymensingh and reared in the departmental goat house. Goats were divided into three age groups: 1 day old, 180 day old and 2 years old. After proper anaesthesia the goats were killed and 0.9% saline was injected through the common carotid artery to flush the blood vessels. Then the goats were preserved by injecting the fixing solution containing 10% formalin, 1%phenol and 0.05% glycerin. After 24 hours of preservation .latex was injected through common carotid artery, then dissection was carried out. Reflecting the skin, the topography, shape, color and weight of the mandibular salivary glands were studied. Dissecting microscope and magnifying glass were used to study the finer branches of blood vessels. For microscopic studies fresh glandular tissues from 15 goats were collected from one side. The tissues were immediately fixed in Labdowsky's mixture (Guyer, 1949 ). After fixing, the tissues were embedded in paraffin following the technique of Gurr (1962). Using Rotary Microtome thin sections were cut at 71l and then the sections were stained following the Harris Haematoxylin and Eosin technique and Verhoeffs stain.

Source of Information: Bangl. J. Vet. Med. {2004). 2 {2): 137-142

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The mandibular gland was drained by the lingofacial and lingiual veins and occasionally by the laryngeal vein. It was mixed tubulo-alveolar gland and consisted to numerous Jobes and lobules supported by connective tissue capsule. The mixed alveoli were more than the isolated serous and mucous alveoli.

Knowledge Management: Journal