Open Access. Powered by Scholars. Published by Universities.®
Kansas Agricultural Experiment Station Research Reports
2007; Kansas Agricultural Experiment Station contribution; no. 07-179-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 978; Beef; Cattle; Gonadotropin releasing hormone (GnRH); CIDR; Ovulation
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Evaluation Of Human Chorionic Gonadotropin As A Replacement For Gnrh In An Ovulation Synchronization Protocol Before Fixed-Time Insemination (2007), M.G. Burns, B.S. Buttrey, D.R. Eborn, J.E. Larson, B.J. Lovaas, G.C. Lamb, Jeffrey S. Stevenson, K. C. Olson
Evaluation Of Human Chorionic Gonadotropin As A Replacement For Gnrh In An Ovulation Synchronization Protocol Before Fixed-Time Insemination (2007), M.G. Burns, B.S. Buttrey, D.R. Eborn, J.E. Larson, B.J. Lovaas, G.C. Lamb, Jeffrey S. Stevenson, K. C. Olson
Kansas Agricultural Experiment Station Research Reports
Two experiments were conducted to evaluate the difference between gonadotropinreleasing hormone (GnRH) and human chorionic gonadotropin (hCG) given at the beginning of a timed AI protocol and their effects on fertility. In Experiment 1, beef cows (n = 672) at six different locations were assigned randomly to treatments based on age, body condition, and days postpartum. On day −10, cattle were treated with GnRH or hCG and a progesterone-releasing controlled internal drug release (CIDR) insert was placed in the vagina. An injection of PGF2αwas given and CIDR inserts were removed on day −3. Cows were inseminated at one fixed timed …