IN-VIVO BIOMETRY OF OVARIAN STRUCTURES DURING OESTRUS IN CROSSBRED CATTLE

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dc.contributor.authorSatheshkumar, S
dc.contributor.authorGanesan, A
dc.contributor.authorMurugan, M; et al.
dc.contributor.authorTANUVAS
dc.date.accessioned2020-03-03T06:24:32Z
dc.date.available2020-03-03T06:24:32Z
dc.date.issued2019-12
dc.descriptionTNV_35thVCRI_CA_Dec-2019_IFBO-16en_US
dc.description.abstractBiometry of preovulatory follicle (POF) and regressed corpus luteum (RCL) during oestrus were ultrasonographically documented in crossbred cattle which were presented to Gynaecology Unit of Veterinary Clinical Complex, Veterinary College and Research Institute, Tirunelveli from September 2017 to August2019. Data from 658 crossbred cattle (462 cows and 196 heifers) of two breeds viz., Jersey cross (JX; n = 542; cows: 392; heifers:150) and Holstein Friesian cross (HFX; n = 116; cows: 70; heifers: 46) maintained under varied rural managemental conditions in Tirunelveli district, Tamil Nadu were analyzed for the study. These animals were diagnosed to be in oestrus stage by ultrasonographic investigation. The diameter of the POF and RCL was calculated by measuring the length and breadth of the respective structures as per standard methods. Perusal of the data revealed that there was no significant difference in the diameter of the POF between cows and heifers (10.7+1.5vs10.2+1.5 mm), however the diameter of the RCL was significantly (P < 0.05) larger in cows (12.7+1.7 mm) than heifers (10.2+2.1 mm). No breed wise difference could be observed in relation to the diameter of ovarian structures. Even though the POF is larger in cows during cold months of the year (11.1+1.4 mm) than hotter months (10.9+1.7 mm) there was no significant difference between them. In heifers, the POF was non-significantly smaller and RCL was significantly (P < 0.05) larger during colder months when compared to cows. Comparison of the data revealed that crossbred cattle maintained in our tropical regions are having comparatively smaller ovarian structures than Bos taurus animals. Hence it is concluded that separate biometrical standards should be framed for the ovarian structures of crossbred cattle maintained in the tropical regions of our country.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810144097
dc.keywords35th Annual Convention of ISSAR, VCRI, Namakkalen_US
dc.language.isoenen_US
dc.pages1en_US
dc.subjectVeterinary Scienceen_US
dc.titleIN-VIVO BIOMETRY OF OVARIAN STRUCTURES DURING OESTRUS IN CROSSBRED CATTLEen_US
dc.title.alternativeInternational Symposium on Global perspectives to enhance livestock fertility through modern reproductive techniques for doubling farmer's Incomeen_US
dc.typeOtheren_US
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