Administration of human chorionic gonadotropin at embryo transfer induced ovulation of a first-wave dominant follicle and increased progesterone and transfer pregnancy rates

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dc.contributor.author Wallace, L.D.
dc.contributor.author Breiner, C.A.
dc.contributor.author Spell, A.R.
dc.contributor.author Carter, J.A.
dc.contributor.author Lamb, G.C.
dc.contributor.author Stevenson, Jeffrey S.
dc.contributor.author Breiner, Ryan M.
dc.date.accessioned 2011-03-30T16:52:25Z
dc.date.available 2011-03-30T16:52:25Z
dc.date.issued 2011-03-30
dc.identifier.uri http://hdl.handle.net/2097/8142
dc.description Beef Cattle Research, 2011 is known as Cattlemen’s Day, 2011 en
dc.description.abstract Embryo transfer (ET) has become more widespread in recent years as a way to improve cattle genetics. According to the annual statistical survey of the American Embryo Transfer Association, more than 200,000 fresh and frozen bovine embryos were transferred in 2008. But despite advancements in reproductive technologies that have occurred since ET was commercialized in the 1970s, industrywide pregnancy rates are only 62.4 and 56.9% for fresh and frozen-thawed ET, respectively. Using ET helps avoid problems from failed fertilization; however, fertilization failure has been characterized as a relatively unimportant factor of pregnancy loss. Approximately 10% of pregnancy failures resulted from fertilization failure and another 10% from failed embryo development. Approximately 20 to 25% of the pregnancy loss in an ET program could be characterized as early embryonic loss. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 11-171-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 1047 en_US
dc.relation.isPartOf Cattlemen’s Day, 2011 en_US
dc.subject Beef en_US
dc.subject Gonadotropin en_US
dc.subject Embryo transfer en_US
dc.subject Progesterone en_US
dc.subject Pregnancy rates en_US
dc.title Administration of human chorionic gonadotropin at embryo transfer induced ovulation of a first-wave dominant follicle and increased progesterone and transfer pregnancy rates en_US
dc.type Conference paper en_US
dc.date.published 2011 en_US
dc.citation.epage 31 en_US
dc.citation.spage 28 en_US
dc.description.conference Cattlemen's Day, 2011, Kansas State University, Manhattan, KS, March 4, 2011 en_US
dc.contributor.authoreid rbreiner en_US
dc.contributor.authoreid jss en_US


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