Comparative study on ovsynch versus doublesynch protocol for estrus synchronization during summer and winter season in buffalo

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dc.contributor.advisorPandey, A.K.
dc.contributor.authorParveen Kumar
dc.date.accessioned2017-07-29T03:41:15Z
dc.date.available2017-07-29T03:41:15Z
dc.date.issued2015
dc.description.abstractThe present study designed for comparative evaluation of Ovsynch and Doublesynch estrus synchronization protocol, mineral profile and oxidative stress in cyclic Murrah buffaloes (n=83) in summer and winter season at farm and field level. The first service conception rate (FSCR) in Ovsynch treatment group in summer and winter season was 25% and 27.8%, respectively. Moreover, in Doublesynch groups, FSCR was 40% and 48% in summer and winter season, respectively. There were no any differences found in diameter of preovulatory follicle (POF) following Ovsynch and Doublesynch treated groups. The overall mean diameter of preovulatory follicle on the day of estrus was larger (p<0.05) in pregnant buffaloes as compared to non-pregnant (14.6 ± 0.4 vs 12.7 ± 0.3 mm, respectively). Corpus luteum diameter on day 10 post-AI and estradiol concentration on the day of AI were positively correlated (CL: r=0.72 and E2: r=0.84, p<0.05) with POF diameter. Retrospective study showed that Doublesynch group’s buffaloes had higher ovulation rate after first GnRH injection as compared to Ovsynch groups and hence had higher pregnancy rate as compared to Ovsynch in summer as well as in winter season. In Ovsynch treatment groups, concentration of MDA was significantly higher (p<0.05) during summer season as compared to its counterpart in winter season while GSH-Px and SOD were found similar (p>0.05). Buffaloes of Doublesynch treatment groups showed significantly higher (p<0.05) MDA level in summer season as compared to its counterpart in winter season on days 7, 9 and AI. However, GSH-Px and SOD levels were similar between summer and winter season. The concentration of Zn was found significant lower (p<0.05) on days 0 and AI in summer as compared to winter season in Ovsynch groups (1.0 ± 0.1 vs 1.5 ± 0.1 and 1.3 ± 0.1 vs 1.7 ± 0.1 ppm, respectively), while plasma Cu, Ca and P were lowers on the day of start of protocol in summer as compared to winter season. Plasma Cu and Ca levels were observed similar on the day of start of protocol and day of AI between summer and winter season while on the day of AI, Zn concentration was higher in summer buffaloes as compared to winter ones . Phosphorus was higher in winter as compared to summer buffaloes. Ovsynch and Doublesynch treated buffaloes in summer and winter season showed non significant variation in plasma progesterone during days of treatment in respective protocol. In conclusion; Doublesynch protocol can be used as estrus synchronization protocol in both seasons to achieve acceptable pregnancy rate.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810026583
dc.keywordsMurrah buffaloes, Ovsynch, Doublesynch, Summer, Winteren_US
dc.language.isoenen_US
dc.publisherLUVASen_US
dc.subVeterinary Gynaecology and Obstetricsen_US
dc.themeComparative study on ovsynch versus doublesynch protocol for estrus synchronization during summer and winter season in buffaloen_US
dc.these.typeM.V.Sc.en_US
dc.titleComparative study on ovsynch versus doublesynch protocol for estrus synchronization during summer and winter season in buffaloen_US
dc.typeThesisen_US
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