MGA and growth promotants administered to beef feedlot heifers have no effect on subsequent oocyte quality or in vitro embryo production

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dc.contributor.author Miller, N.
dc.contributor.author Grieger, David M.
dc.contributor.author Fike, Karol E.
dc.date.accessioned 2012-04-03T16:38:54Z
dc.date.available 2012-04-03T16:38:54Z
dc.date.issued 2012-04-03
dc.identifier.uri http://hdl.handle.net/2097/13561
dc.description.abstract Beef feedlot heifers have the potential to serve as viable donors of oocytes post-slaughter for in vitro embryo production. Oocyte quality is a critical factor affecting the success of in vitro embryo production and can be influenced by factors such as age and reproductive status, ovarian follicle size, and nutritional status of the donor female. In a conventional feedlot setting, heifers are typically administered steroid-based growth promotants and fed melengestrol acetate (MGA) for suppression of estrus, which increases circulating concentrations of reproductive steroids, particularly estradiol. The effects of these management practices on oocyte quality and numbers are unknown. The purpose of this study was to compare oocytes harvested from traditionally managed beef feedlot heifers implanted with growth promotants and fed MGA with oocytes from heifers given neither MGA nor growth promotants, and to evaluate potential effects of these feedlot management practices on early embryo development. 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 MGA en_US
dc.subject Heifers en_US
dc.subject Oocyte quality en_US
dc.subject In vitro embryo en_US
dc.title MGA and growth promotants administered to beef feedlot heifers have no effect on subsequent oocyte quality or in vitro embryo production en_US
dc.type Conference paper en_US
dc.date.published 2012 en_US
dc.citation.epage 41 en_US
dc.citation.spage 39 en_US
dc.description.conference Cattlemen's Day, 2012, Kansas State University, Manhattan, KS, 2012 en_US
dc.contributor.authoreid dgrieger en_US
dc.contributor.authoreid karol en_US


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