Timed-insemination of beef heifers using Cosynch with or without MGA
| dc.citation.epage | 16 | en_US |
| dc.citation.spage | 15 | en_US |
| dc.contributor.author | Wickersham, T.A. | |
| dc.contributor.author | Cochran, R.C. | |
| dc.contributor.author | Grieger, David M. | |
| dc.contributor.authoreid | dgrieger | en_US |
| dc.date.accessioned | 2010-08-06T20:51:50Z | |
| dc.date.available | 2010-08-06T20:51:50Z | |
| dc.date.issued | 2010-08-06T20:51:50Z | |
| dc.date.published | 2001 | en_US |
| dc.description.abstract | Our purpose was to determine if feeding melengesterol acetate (MGA) for 1 week in combination with gonadotropin-releasing hormone (GnRH) and prostaglandin-F2" (PGF) would better synchronize heifers for timed artificial insemination. Sixty-nine yearling beef heifers received an injection of GnRH 7 days before receiving an injection of PGF. Half of the heifers were fed MGA between the GnRH and PGF injections (Cosynch+MGA), whereas the remaining heifers were not (Cosynch). All heifers were given a second GnRH injection 2 days after PGF and inseminated at that time. Pregnancy rate for the Cosynch group (43%) was greater (P<0.05) than that for the Cosynch+MGA group (15%). This experiment suggests that short-term feeding (7 days) of MGA in concert with a Cosynch protocol was detrimental to fertility in beef heifers. | en_US |
| dc.description.conference | Cattlemen's Day, 2001, Kansas State University, Manhattan, KS, March 2, 2001 | en_US |
| dc.identifier.uri | http://hdl.handle.net/2097/4545 | |
| dc.publisher | Kansas State University. Agricultural Experiment Station and Cooperative Extension Service | en_US |
| dc.relation.isPartOf | Cattlemen’s Day, 2001 | en_US |
| dc.relation.isPartOf | Kansas Agricultural Experiment Station contribution; no. 01-318-S | en_US |
| dc.relation.isPartOf | Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 873 | en_US |
| dc.subject | Beef | en_US |
| dc.subject | Heifers | en_US |
| dc.subject | AI | en_US |
| dc.subject | Synchronization | en_US |
| dc.subject | MGA | en_US |
| dc.subject | GnRh | en_US |
| dc.subject | PGF2a | en_US |
| dc.title | Timed-insemination of beef heifers using Cosynch with or without MGA | en_US |
| dc.type | Conference paper | en_US |
