Effects of MGA and prostaglandin on estrus induction and synchronization in cows and heifers

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dc.contributor.author Perry, R.C.
dc.contributor.author Boyd, G.W.
dc.contributor.author Goehring, T.B.
dc.contributor.author Corah, L.R.
dc.date.accessioned 2010-12-01T22:35:56Z
dc.date.available 2010-12-01T22:35:56Z
dc.date.issued 2010-12-01
dc.identifier.uri http://hdl.handle.net/2097/6737
dc.description.abstract Four trials were conducted to evaluate the effectiveness of Melegestrol Acetate (MGA ®) and prostaglandin (PGF) in inducing and synchronizing estrus. In trial 1, treated heifers were fed MGA for 7 days and given a PGF injection on either the first or last day of MGA feeding. The 7-day estrus response was higher (P<.01) for treated heifers than untreated controls. In trial 2, treated cows were fed MGA for 7 days and given a PGF Injection on the last day of MGA feeding or 13 days after the last day of MGA feeding. The 7-day estrus response was also higher (P<.01) in treated cows. In trial 3, 59 cows were fed MGA for 7 days followed by a PGF injection, and exposed to bulls for 66 days. The MGA-PGF treatment was ineffective in synchronizing estrus and hastening conception. In trial 4, feeding MGA for 7 days successfully synchronized estrus in. cycling cows, but first service conception rates were reduced by 10% in the Kansas study and by 16% in a four state study. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen’s Day, 1987 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 87-309-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 514 en_US
dc.subject Beef en_US
dc.subject MGA en_US
dc.subject Prostaglandin en_US
dc.subject Estrus en_US
dc.subject Synchronization en_US
dc.title Effects of MGA and prostaglandin on estrus induction and synchronization in cows and heifers en_US
dc.type Conference paper en_US
dc.date.published 1987 en_US
dc.citation.epage 70 en_US
dc.citation.spage 66 en_US
dc.description.conference Cattlemen's Day, 1987, Kansas State University, Manhattan, KS, March, 1987 en_US


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