Application of the progesterone (CIDR) insert in artificial insemination programs of dairy cattle

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dc.contributor.author Stevenson, Jeffrey S.
dc.date.accessioned 2010-11-29T17:50:32Z
dc.date.available 2010-11-29T17:50:32Z
dc.date.issued 2010-11-29
dc.identifier.uri http://hdl.handle.net/2097/6658
dc.description Dairy Research, 2007 is known as Dairy Day, 2007 en
dc.description.abstract Use of progesterone inserts (controlled interval drug release, CIDR) offers another option for synchronizing estrus and ovulation in replacement heifers and lactating dairy cows. Results indicate that heifers may be inseminated after detected estrus, at a fixed time (timed AI), or a combination of both. Conception rates exceed 50% in both scenarios. Practical applications of the CIDR in lactating cows have been used to resynchronize the return estrus of previously inseminated cows and as part of first-service AI-breeding protocols. Use for resynchronization has no drawbacks in previously inseminated cows, but may increase embryo survival during the first 30- to 60-days of pregnancy. No increase in the heat-detection rates of open cows is generally achieved, and no differences in return conception rates are observed between treated and control cows. First-service applications of the progesterone insert have resulted in some positive and some negative effects on timed AI (TAI) conception rates. More research is warranted to determine if an identifiable subpopulation of cows can benefit from exposure of the progesterone insert before first AI. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Dairy Day, 2007 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 08-127-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 984 en_US
dc.subject Dairy en_US
dc.subject Heifers en_US
dc.subject Cows en_US
dc.subject CIDR en_US
dc.subject Ovsynch en_US
dc.subject Pregnancy rates en_US
dc.title Application of the progesterone (CIDR) insert in artificial insemination programs of dairy cattle en_US
dc.type Conference paper en_US
dc.date.published 2007 en_US
dc.citation.epage 11 en_US
dc.citation.spage 5 en_US
dc.description.conference Dairy Day, 2007, Kansas State University, Manhattan, KS, 2007
dc.contributor.authoreid jss en_US


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