Comparison of Efficacy of OVSYNCH and CIDR Treatment Methods in Repeat Breeder Dairy Cows

S. Kothandaraman¹ , R. John Christy²

1. Faculty of Agriculture,AnnamalaiUniversity,Annamalai Nagar, India.
2. Faculty of Agriculture,AnnamalaiUniversity,Annamalai Nagar, India.

Correspondence should be addressed to: baapoo@gmail.com.

Section:Research Paper, Product Type: Isroset-Journal
Vol.3 , Issue.11 , pp.1-3, Dec-2017

CrossRef-DOI:   https://doi.org/10.26438/ijsrms/v3i11.13

Online published on Dec 31, 2017

Copyright © S. Kothandaraman, R. John Christy . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
The most critical hurdle faced by the livestock industry is the sub-optimal reproductive efficiency of the dairy herd. Ample efforts are rendered to augment the reproductive efficiency. In this study, we aimed to compare the efficacy of Ovsynch and CIDR (Controlled Internal Drug Release) treatment with fixed time insemination in repeat breeder dairy cows. In present study, we selected 60 repeat breeder cows with no palpable abnormalities. Then, cows were divided into 2 groups of 30 each. Cows of group 1 were treated with Ovsynch while cows of group 2 were treated with CIDR for 9 days. On 8th day, all cows of group 2 were injected with 2ml of PGF2αi/m. CIDR was removed on day 9 and fixed time AI was carried out at 60 and 72 hours thereon. Oestrous manifested by cows was higher in CIDR(93.3%) than Ovsynch(40.0%) treatment method. Conception rate in dairy cows were 15 (46.42%) and 8(33.33%) in CIDR and Ovsynch method, respectively. CIDR based fixed AI was found to be better than Ovsynch method in repeat breeder dairy cows.

Key-Words / Index Term :
Comparison of Ovsynch and CIDR, Repeat breeder, Fixed time AI, Conception rate

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