Timed insemination of suckled beef cows after ovulation synchronizationwith Cosynch + CIDR

K-REx Repository

Show simple item record

dc.contributor.author Johnson, Sandra K.
dc.contributor.author Harmoney, Keith R.
dc.contributor.author Stevenson, Jeffrey S.
dc.date.accessioned 2010-08-06T21:21:50Z
dc.date.available 2010-08-06T21:21:50Z
dc.date.issued 2010-08-06T21:21:50Z
dc.identifier.uri http://hdl.handle.net/2097/4575
dc.description.abstract Lactating beef cows (n=360) were synchronized using the Cosynch procedure; 100 μg of GnRH (day −7) followed in 7 days by 25 mg of PGF2α (day 0). A used intravaginal progesterone insert (CIDR-B) was inserted on day −7 and removed at the time of PGF2α administration. Cows were assigned to a 2 × 2 factorial arrangement of four treatments: 1) insemination beginning at 48 vs. 60 hours after PGF2α and 2) administration of a second, 100 μg injection of GnRH or an equivalent volume of saline immediately after timed AI. Timed AI at either 48 or 60 hours after PGF2α in a Cosynch + CIDR protocol was equally effective. Administration of GnRH at timed AI improved conception in all cycling cows and in some noncycling cows, depending on their progesterone status. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen’s Day, 2002 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 02-318-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 890 en_US
dc.subject Beef en_US
dc.subject Ovulation synchronization en_US
dc.subject Beef cows en_US
dc.subject Timed AI en_US
dc.subject GnRH en_US
dc.subject CIDR en_US
dc.title Timed insemination of suckled beef cows after ovulation synchronizationwith Cosynch + CIDR en_US
dc.type Conference paper en_US
dc.date.published 2002 en_US
dc.citation.epage 123 en_US
dc.citation.spage 121 en_US
dc.description.conference Cattlemen's Day, 2002, Kansas State University, Manhattan, KS, March 1, 2002 en_US
dc.contributor.authoreid sandyj en_US
dc.contributor.authoreid kharmone en_US
dc.contributor.authoreid jss en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search K-REx


Advanced Search

Browse

My Account

Statistics








Center for the

Advancement of Digital

Scholarship

118 Hale Library

Manhattan KS 66506


(785) 532-7444

cads@k-state.edu