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dc.contributor.authorFerreira, Gonzalo
dc.date.accessioned2017-02-23T20:56:42Z
dc.date.available2017-02-23T20:56:42Z
dc.date.issued2013-12
dc.identifier.urihttp://hdl.handle.net/10919/75137
dc.description.abstractThe objective of this study was to describe the reproductive performance of 23 grazing-based dairy farms from western Buenos Aires province in Argentina. The data set included data from the breeding season starting in May 2011 and ending in March 2012. Submission, conception, and pregnancy rates ranged from 42.4 to 70.2%, 20.1 to 44.9%, and 10.3 to 24.5%, respectively. No correlation was observed between conception and submission rates, suggesting that dairy farms with poor submission rates but with relatively high conception rates might increase pregnancy rates by simply putting more effort into increasing estrus detection and submission rates. Decreases in submission and conception rates were observed among 21-d cycles, indicating seasonal variation. A greater number of cows in estrus at the beginning of the breeding period could have facilitated estrus detection and therefore increased submission rates. In addition, restarting the breeding activities with timed artificial insemination programs may explain the highest submission rates at the beginning of the breeding period. A first decrease of 5.1 percentage units in conception rate was observed during the spring (October–November) and an additional decrease of 2.4 percentage units in conception rate was observed during the summer (January–February). Decreases in conception rates could be related to high intakes of high-protein diets, heat stress, or a combination of both. Attenuating heat stress during the summer may be critical for maximizing conception rates in grazing systems from western Buenos Aires province.en_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.publisherAmerican Dairy Science Associationen_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectreproductive performanceen_US
dc.subjectconception rateen_US
dc.subjectgrazingen_US
dc.titleReproductive performance of dairy farms in western Buenos Aires province, Argentinaen_US
dc.typeArticle - Refereeden_US
dc.title.serialJournal of Dairy Scienceen_US
dc.identifier.doihttps://doi.org/10.3168/jds.2013-6910
dc.identifier.volume96en_US
dc.identifier.issue12en_US
dc.type.dcmitypeTexten_US


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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
License: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)