Influence of prebreeding progesterone plus prostaglandin F2-alpha on estrus and fertility in lactating dairy cows

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dc.contributor.author Mee, M.O.
dc.contributor.author Stewart, R.E.
dc.contributor.author Stevenson, Jeffrey S.
dc.contributor.author Call, Edward P.
dc.date.accessioned 2012-09-20T19:34:14Z
dc.date.available 2012-09-20T19:34:14Z
dc.date.issued 2012-09-20
dc.identifier.uri http://hdl.handle.net/2097/14729
dc.description.abstract Progesterone administered before breeding may increase estrous expression and subsequent fertility in lactating dairy cows. Holstein cows (n=302) were assigned randomly at calving to three groups. Cows received no treatment (controls), one injection of prostaglandin F 2-alpha (PGF), or progesterone plus one injection of PGF (PRID + PGF). The average interval to estrus was 5 days shorter in PRID + PGF cows compared to cows given only PGF. In addition, more cows were observed in estrus 2 to 5 days after treatment in the PRID + PGF group compared to the PGF group. Average days from calving to conception were reduced in PRID + PGF cows by 15 to 20 days compared to control and PGF cows. We concluded that prebeeding progesterone in combination with PGF appears to enhance fertility. en_US
dc.publisher Kansas Agricultural Experiment Station en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 88-114-S en_US
dc.relation.isPartOf Report of progress (Kansas Agricultural Experiment Station); 527 en_US
dc.subject Dairy en_US
dc.subject Progesterone en_US
dc.subject Prostaglandin F2-alpha en_US
dc.subject Fertility en_US
dc.subject Lactation en_US
dc.title Influence of prebreeding progesterone plus prostaglandin F2-alpha on estrus and fertility in lactating dairy cows en_US
dc.type Conference paper en_US
dc.date.published 1987 en_US
dc.citation.epage 34 en_US
dc.citation.spage 32 en_US
dc.description.conference Dairy Day, 1987, Kansas State University, Manhattan, KS, 1987
dc.contributor.authoreid jss en_US


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