Background: The present study aimed to study the clinical anatomy of the maxillofacial and mandibular regions of the Madras Red sheep through the morphometric analysis of some clinically important parameters pertaining to the regional anaesthesia. Materials and methods: The study was conducted in 20 male and 20 female adult Madras Red sheep around 20-25 kg body weight. Eleven parameters related to the clinical regional anaesthesia of the maxillofacial and the mandibular regions were recorded. Results: The distance between the facial tuberosity to the infraorbital canal was 2.25 ± 0.14 cm in males and 2.14 ± 0.15 cm in females. The distance from the infraorbital canal to the root of the alveolar tooth was 1.73 ± 0.28 cm in males and 1.73 ± 0.13 cm in females. The length and height of the mandibles were 15.37 ± 0.56 cm, 9.00 ± 0.24 cm and in males 14.53 ± 0.24 cm, 9.68 ± 0.16 cm in females, respectively. The maximum height of the mandible to the coronoid process, width or height of the mandibular foramen and the distance from the condyloid process to the base of the mandible were recorded as 9.0 ± 24, 0.82 ± 0.05, 6.68 ± 0.19 cm in males and 9.68 ± 0.16, 0.83 ± 0.04, 6.25 ± ± 0.28 cm in females, respectively. Conclusions: The present study revealed that most of the parameters showed statistically significant difference between the sexes i.e. the males had higher values. However, from the practical point of view, these differences were meagre. The results were discussed with regard to their clinical applications in various regional anaesthesia performed in maxillofacial and mandibular regions of the Madras Red sheep.

Background: Madras Red sheep is a well-recognized meat type breed reared only on free range system to yield tasty meat. The aim of this study was to determine the gross, microanatomical and ultrastructural details of the interdigital gland in Madras Red sheep. Methods: The interdigital glands were removed immediately after slaughter and subjected for gross morphological, histological, immunohistochemical studies and ultrastructural observations. Result: The results revealed that a well-developed tobacco-pipe shaped interdigital gland was present in all the four limbs which was composed of an orifice, excretory duct, body and bent or flexure. Histologically, wall of the gland was composed of epidermis, dermis and capsule from within outward. Epidermis was made of stratified squamous keratinized epithelium. Dermis was composed of dense irregular connective tissue with sweat, sebaceous glands, arrectores pili muscle and hair follicles were embedded within. The sweat gland appeared as group of tortuous tubules under scanning electron microscope. The oily secretion of the gland helps in maintaining the healthiness of foot during movement of the animal.

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