Keywords
Cattlemen's Day, 1999; Kansas Agricultural Experiment Station contribution; no. 99-339-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 831; Beef; Cows; AI; Estrus-ovulation synchronization; GnRH; PGF2
Abstract
The Cosynch protocol (GnRH 7 days before and again 48 h after PGF2" with AI at the second GnRH injection) produced pregnancy rates in suckled beef cows that exceeded 50% without heat detection and with only three handlings of all cows. The addition of an intravaginal progesterone insert to the Cosynch protocol improved pregnancy rates in two of the three breeds of cows studied.
First page
65
Last page
67
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Lamb, G.C.; Cartmill, J.A.; Hensley, B.A.; Marple, T.J.; and Stevenson, Jeffrey S.
(1999)
"Fixed-time inseminaton of suckled beef cows. 2. Cosynch and progesterone,"
Kansas Agricultural Experiment Station Research Reports:
Vol. 0:
Iss.
1.
https://doi.org/10.4148/2378-5977.1844
