Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Is Gnrh Necessary At Cidr Insertion Using A 7-Day Cidr Synchronization Protocol For Beef Heifers?, D.R. Eborn, E.E. Blair, David M. Grieger
Is Gnrh Necessary At Cidr Insertion Using A 7-Day Cidr Synchronization Protocol For Beef Heifers?, D.R. Eborn, E.E. Blair, David M. Grieger
Kansas Agricultural Experiment Station Research Reports
The EAZI-BREED CIDR is commonly used in estrous synchronization protocols for both beef heifers and cows. The label calls for insertion of a progesterone-impregnated controlled internal drug release (CIDR) for 7 consecutive days with an injection of prostaglandin F2αgiven a day before CIDR removal. Animals should display estrus 1 to 3 days after CIDR removal. Modifications to this protocol include administration of gonadotropin-releasing hormone (GnRH) at the time of CIDR insertion and administration of the prostaglandin injection at the time of CIDR removal on day 7. Use of GnRH in conjunction with a CIDR may improve estrous synchronization in beef …