Article Title
Pregnancy rates in beef cattle after administration of GnRH agonist 11 to 14 days after insemination
Keywords
Cattlemen's Day, 1991; Kansas Agricultural Experiment Station contribution; no. 91-355-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 623; Beef; GnRH Agonist; Pregnancy rates; Suckled cows; Heifers
Abstract
Pregnancy rates were assessed in suckled beef cows (n=145) and virgin beef heifers (n=606) of mixed breeding following an injection of either 100 or 200 μg of a GnRH agonist given once on d 11-14 after estrus and insemination. In heifers, the 100 μg dose improved (P<.08) pregnancy rates, based on rectal palpation of the uterus, and at both doses, based on actual calving dates. There was no effect of either dose on pregnancy rates of suckled cows, based on palpation results, but actual calving showed a 21% increase (P<.08) in pregnancy rates in cows treated with 100 μg of the GnRH agonist.
First page
23
Last page
25
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Rettmer, I.; Corah, L.R.; and Stevenson, Jeffrey S.
(1991)
"Pregnancy rates in beef cattle after administration of GnRH agonist 11 to 14 days after insemination,"
Kansas Agricultural Experiment Station Research Reports:
Vol. 0:
Iss.
1.
https://doi.org/10.4148/2378-5977.2203
