Thumbnail Image

Thesis

Browse

20081
Reset filters
Author: ANKAMARAJU, G × End date: 2008 × Start date: 2008 ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    PATHOMORPHOLOGICAL STUDIES ON BUFFALO UTERUS
    (SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI - 517 502. (A.P.) INDIA, 2008-06) ANKAMARAJU, G; Madhuri, D(MAJOR); Anand Kumar, A; Narsimha Reddy, Y
    ABSTRACT:Female genital tract of the buffalo has considerable biological and economic importance. The bovine infertility has been reported to be associated with various pathomorphological conditions in the genital organs. Reproductive disorders causes infertility ultimately leading to substantial economic losses through increased calving intervals inspite of tremendous advances in Veterinary medicine. Specific and non specific infectious agents during pre and postpartum periods frequently invades the uterus and produces metritis and endometritis leading to repeat breeding. Considering this the present study was planned to observe the incidence of gross and microscopic lesions affecting the uterus of she-buffaloes in and around Hyderabad. For the present study, three hundred and seventy five uteri of non-descript and graded murrah buffalo cows aged four to ten years with no breeding history were collected from the animals slaughtered in and around Hyderabad. Gross, histopathological, bacteriological and electron microscopic studies were carried out. Of the 375 uteri pathological lesions were observed in 145 (38.66%). The distribution of the lesions into acute, sub-acute, chronic and chronic suppurative endometritis was 11.20, 6.10, 18.10 and 3.20 percent respectively. In the present study high incidence of chronic endometritis (18.00%) was recorded. Circulatory disturbances in the mucosa were the most prominent microscopic lesions observed in acute endometritis. Severe congestion of blood vessels, enlargement of stromal cells, denudation of surface epithelium and mild to moderate infiltration of polymorphs and lymphocytes in stratum compactum was observed. In sub acute endometritis the lesions observed were extensive denudation of epithelial cells, stromal fibrosis and moderate infiltration of inflammatory cells in stratum compactum and stratum spongiosum. Severe infiltration of Polymorpho nuclear cells in perivascular and periglandular spaces of uterine stroma and moderate to severe periglandular fibrosis was observed in chronic endometritis samples. Dilation of endometrial glands and necrosis of glandular epithelium in chronic suppurative endometritis samples was recorded in addition to infiltration. 48 cases showed positive for bacterial identification. Pseudomonas, Staphylococci, Escherichia coli, Klebsiella and Proteus sp. were identified by cultural isolation. Confirmed chronic endometritis tissue was subjected to scanning electron microscopy and the electron micrographs revealed infiltration and degenerative changes in the endometrium, thickening of endometrium, presence of fibrous tissue and lack of microvilli with complete destruction of glandular structures at few places. Based on the results of present investigation it can be concluded that: 1. The incidence of chronic endometritis is high in she-buffaloes in and around Hyderabad. 2. Chronic endometritis may be a chief contributor to the incidence of repeat – breeding in buffaloes. 3. Extensive fibrotic tissue observed ultra structurally may be one of the many factors decreasing fertility in she-buffaloes.