Research Journal of Biological Sciences
ISSN: Online 1993-6087ISSN: Print 1815-8846
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Abstract
The aim of current study is to compare fertility rate improvement by using Controlled Internal Drug Release (CIDR) or GnRH (Gonadorelin) in repeat breeder cows. A total of 150 repeat breeder cows with healthy genital tract in clinical examinations were selected and divided into 3 groups of 50 cows group-1. In group 1, CIDR is used in day 5 until 12 after insemination. In group 2, an injection of Gonadorelin was done in day 11 after insemination for each cow and group 3 (control), received no treatment. The results showed fertility rate of 28, 16 and 12% in group 1, 2 and 3, respectively. There were significant differences in fertility rate between group 1 and 3 (p = 0.0092) and group 1 and 2 (p = 0.04). In conclusion, the use of CIDR is more efficient than single dose of Gonadorelin in treatment of repeat breeder cows.
How to cite this article:
Reza Vajdi Hokmabad, Alireza Hoshmandi Sarabi and Samad Mosaferi. Comparative Study of after Insemination Use of CIDR and GnRH in Fertility Rate Improvement in Repeat Breeder Cows.
DOI: https://doi.org/10.36478/rjbsci.2012.204.205
URL: https://www.makhillpublications.co/view-article/1815-8846/rjbsci.2012.204.205