Presynchronizing Prostaglandin F2α injection before timed artificial insemination CO-Synch + CIDR program

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dc.contributor.author Hill, Scott L.
dc.contributor.author Pulley, Stephanie Leeann
dc.contributor.author Mellieon, H.I. Jr.
dc.contributor.author Olson, K. C.
dc.contributor.author Jaeger, John R.
dc.contributor.author Breiner, Ryan M.
dc.contributor.author Perry, G.A.
dc.contributor.author Lamb, G.C.
dc.contributor.author Stevenson, Jeffrey S.
dc.date.accessioned 2012-04-03T16:39:05Z
dc.date.available 2012-04-03T16:39:05Z
dc.date.issued 2012-04-03
dc.identifier.uri http://hdl.handle.net/2097/13562
dc.description.abstract Fixed-time artificial insemination is an effective management tool that reduces the labor associated with more conventional programs that require detection of estrus. The 7-day CO-Synch + controlled internal drug release (CIDR) insert protocol has been shown to effectively initiate estrus and ovulation in cycling and non-cycling suckled beef cows, producing pregnancy rates at or greater than 50% in beef cows. The gonadotropin- releasing hormone (GnRH) injection that begins the CO-Synch + CIDR program initiates ovulation in a large proportion of cows, particularly anestrous cows. The CIDR, which releases progesterone intravaginally, prevents short estrous cycles that usually follow the first postpartum ovulation in beef cows. Our hypothesis was that inducing estrus with a prostaglandin injection 3 days before applying the 7-day CO-Synch + CIDR protocol might increase the percentage of cycling cows that would exhibit synchronous follicular waves after the onset of the CO-Synch + CIDR protocol, thereby increasing pregnancy outcomes. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen's Day, 2012 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 12-231-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 1065 en_US
dc.relation.isPartOf Beef Cattle Research, 2012 is known as Cattlemen's Day, 2012 en_US
dc.subject Beef en_US
dc.subject Prostaglandin F2α en_US
dc.subject Timed A.I. en_US
dc.subject CO-Synch + CIDR en_US
dc.title Presynchronizing Prostaglandin F2α injection before timed artificial insemination CO-Synch + CIDR program en_US
dc.type Conference paper en_US
dc.date.published 2012 en_US
dc.citation.epage 45 en_US
dc.citation.spage 42 en_US
dc.description.conference Cattlemen's Day, 2012, Kansas State University, Manhattan, KS, 2012 en_US
dc.contributor.authoreid kcolson en_US
dc.contributor.authoreid jrjaeger en_US
dc.contributor.authoreid rbreiner en_US
dc.contributor.authoreid jss en_US


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