@article{MAKHILLRJBS20127511354,
    title = {Comparative Study of after Insemination Use of CIDR and GnRH in Fertility Rate Improvement in Repeat Breeder Cows},
    journal = {Research Journal of Biological Sciences},
    volume = {7},
    number = {5},
    pages = {204-205},
    year = {2012},
    issn = {1815-8846},
    doi = {rjbsci.2012.204.205},
    url = {https://makhillpublications.co/view-article.php?issn=1815-8846&doi=rjbsci.2012.204.205},
    author = {Samad,Reza Vajdi and},
    keywords = {Repeat breeder,cow,GnRH,progestron,infertility,CIDR,Iran},
    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<sup>-1</sup>. 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.}
    }