Histomorphological studies on the pineal gland of Gaddi Goat

The pineal gland of Gaddi goat was enclosed in a thin capsule composed of collagen and reticular fibers. The parenchyma of the pineal gland consisted of pinealocytes and glial cells. The pinealocytes were arranged in irregular groups, cords or follicles and were distributed more densely at the periphery than at the centre. They had large and round nuclei. Their cytoplasm showed strong reaction for protein. Pineal gland of Gaddi goat showed four types of glial cells. In the interstitial connective tissue of the pineal gland nerve fibers were also observed surrounding the blood capillaries corpora arenacea were observed as large concentric lamellar structures in the central part of the pineal gland.