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Subject: Veterinary Anatomy × Author: SIVA RAMA KRISHNA, NELAPATI × End date: 2020 × Start date: 2017 ×
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    ThesisItemOpen Access
    MORPHO, HISTOLOGICAL AND HISTOCHEMICAL STUDIES ON OVARY AND OVIDUCT OF SOW (Sus scrofa domesticus)
    (SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI - 517502. (A.P.) INDIA, 2019-11) SIVA RAMA KRISHNA, NELAPATI; RAJU, N.K.B (MAJOR); NAGAMALLESWARI, Y; DEVI PRASAD, V
    The present study was conducted on six healthy adult female pigs of Large White Yorkshire aged between 12 months to 18 months. The ovaries and oviducts were collected from these pigs that are slaughtered in Department of Livestock Products Technology, NTR College of Veterinary Science, Gannavaram. The morphology of the ovaries revealed that the average length and width were 2.93±0.22 cm and 2.33±0.19 cm of left and 3.00±0.25 and 2.36±0.24 of right respectively. The average weight of ovary was 3.22±0.38 gm and 3.17±0.53 gm in left and right respectively. The average length of the oviduct was 30.58±1.63 and 30.63±2.28 cm in left and right oviducts respectively. The surface of the ovary lined by germinal epithelium, which was not continuous and had intermittent gaps. The tunica albugenia underlying the epithelium mostly consisted of collagen fibers and sparsely distributed elastic fibers. The primary follicles consisted of ovum surrounded by a layer of squamous cells while the secondary follicles were lined by two layers of cuboidal cells. The tertiary follicles were surrounded by many layers of polyhedral cells which contained spherical nuclei at the center of the cell. The average diameters of primary follicle, secondary follicles and tertiary follicles were 70.65±1.8μm, 295.82±29.3μm and 725.71±90.8μm respectively. In the Graafian follicles the antrum was filled with liquor folliculi. Average diameter of Graafian follicle was 1152.47±74.5μm. In the infundibulum mucosa thrown into several longitudinal primary folds which in turn gave several secondary and tertiary folds. The mucosa of ampulla was lined by pseudostratified ciliated and non ciliated columnar epithelium. The non ciliated cells called peg cells possessed basophilic granules at their apical ends and they were secretory in nature. The ciliated cells consisted of long kinocilia at their apical ends. The mucosa of the isthmus was thrown into 7 to 9 longitudinal folds indicated that reduced number of folds. Most of the folds does not show secondary and tertiary folds. In the ovary, the germinal epithelium, tunica albuginea, cortical stroma, primordial follicles and secondary follicles showed mild positive reaction for periodic acid Schiff (PAS). The cumulus oophorus, corona radiate and cytoplasm of ovum were negative for PAS reaction. The zona pellucida showed intense positive reaction for PAS. Membrana granulosa and theca interna showed mild positive reaction for Alcian blue (AB) while there was intense AB reaction in theca externa. The primary, secondary and tertiary follicles, the basal cells of membrane of granulosa and the cells of the theca interna showed intense lipid droplets in the follicular cells. In the oviduct, lining epithelium of mucosal folds in infundibulum and ampulla revealed strong AB positive reactions. In isthmus the apical portions of the lining epithelium of folds observed intermittent AB positive reaction.