Comparison of synchronized-ovulation protocols and traditional synchronized-estrys programs using prostaglandin F2(alpha)

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dc.contributor.author Kobayashi, Y.
dc.contributor.author Stevenson, Jeffrey S.
dc.date.accessioned 2011-05-06T20:23:22Z
dc.date.available 2011-05-06T20:23:22Z
dc.date.issued 2011-05-06
dc.identifier.uri http://hdl.handle.net/2097/8800
dc.description.abstract Five treatments were developed to compare a new synchronized ovulation protocol, which programs follicular development with the regression of the corpus luteum, and traditional prostaglandin protocols that only control the regression of the corpus luteum. The synchronized ovulation treatment, which requires no heat detection before a fixed-time insemination, tended to decrease pregnancy rates compared to a similar synchronized ovulation treatment in which inseminations occurred at a detected estrus (30 vs 50%). The traditional two-injection prostaglandin protocol that synchronized estrus by regression of the corpus luteum had a greater pregnancy rate (57%) than similar two-injection prostaglandin protocols in which gonadotropin-releasing hormone (GnRH or Cystorelin®) was used to induce ovulation of the follicle before one fixed-time insemination (21%) or one fixed-time insemination was given in the absence of estrus (18%). The synchronized ovulation protocol improved pregnancy rates compared to prostaglandin protocols with fixed-time inseminations, but in either protocol, in which ovulation or estrus was synchronized, pregnancy rates were always greater when inseminations were performed after detected estrus. en_US
dc.publisher Kansas Agricultural Experiment Station en_US
dc.relation.isPartOf Dairy Day, 1995 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 96-106-S en_US
dc.relation.isPartOf Report of progress (Kansas Agricultural Experiment Station and Cooperative Extension Service); 742 en_US
dc.subject Prostaglandin en_US
dc.subject Gonadotropin-releasing hormone en_US
dc.subject Sychronzied ovulation en_US
dc.subject synchronized estrus en_US
dc.subject Pregnancy rates en_US
dc.title Comparison of synchronized-ovulation protocols and traditional synchronized-estrys programs using prostaglandin F2(alpha) en_US
dc.type Conference paper en_US
dc.date.published 1995 en_US
dc.citation.epage 40 en_US
dc.citation.spage 38 en_US
dc.contributor.authoreid jss en_US

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