A novel estrus-synchronization program for anestrous and cycling, suckled, beef cows

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dc.contributor.author Forbes, W.L.
dc.contributor.author Corah, L.R.
dc.contributor.author Thompson, K. E.
dc.contributor.author Lamb, G.C.
dc.contributor.author Grieger, David M.
dc.contributor.author Stevenson, Jeffrey S.
dc.date.accessioned 2010-09-02T21:12:08Z
dc.date.available 2010-09-02T21:12:08Z
dc.date.issued 2010-09-02T21:12:08Z
dc.identifier.uri http://hdl.handle.net/2097/4830
dc.description.abstract We used four herds at three Kansas ranches to evaluate the potential of two new estrus synchronization strategies to increase estrus expression and fertility of 911 crossbred suckled beef cows. The treatments included: 1) 100 μg of GnRH and a 6-mg norgestomet ear implant on day -7 and 25 mg of PG F2" and implant removal on day 0 (GnRH+NORG+PG F2"); 2) 100 μg of GnRH on day - 7 and 25 mg of PGF 2" on day 0 (GnRH+PG F2"); and 3 ) (control) 25- mg injections of PG F2" on days -14 and 0; (2×PGF2" control) . The GnRH+NORG+ PGF 2" and GnRH+PGF treatments increased (P<.01) 2" the overall percentages of cows detected in estrus by 49% and 27% and pregnancy rates by 46% and 37%, respectively, over the control group, without altering conception rate. Both treatments increase d the estrus, conception, and pregnancy rates of noncycling cows, compared to controls. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen’s Day, 1997 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 97-309-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 783 en_US
dc.subject Beef en_US
dc.subject Estrus synchronization en_US
dc.subject AI en_US
dc.subject GnRH en_US
dc.subject PGF2 en_US
dc.subject Norgestomet en_US
dc.title A novel estrus-synchronization program for anestrous and cycling, suckled, beef cows en_US
dc.type Conference paper en_US
dc.date.published 1997 en_US
dc.citation.epage 97 en_US
dc.citation.spage 95 en_US
dc.description.conference Cattlemen's Day, 1997, Kansas State University, Manhattan, KS, March 7, 1997 en_US
dc.contributor.authoreid dgrieger en_US
dc.contributor.authoreid jstevens en_US

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