{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T08:11:32Z","timestamp":1793261492548,"version":"4.5.0"},"reference-count":13,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2006,2,27]],"date-time":"2006-02-27T00:00:00Z","timestamp":1140998400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Reprod Domestic Animals"],"published-print":{"date-parts":[[2006,4]]},"abstract":"<jats:title>Contents<\/jats:title><jats:p>The effects of artificial insemination (AI) using sexed sperm on pregnancy rates have seldom been studied in lactating dairy cows on commercial dairy farms. We evaluated pregnancy results after AI of 306 lactating dairy cows, of which 157 were inseminated with 2\u2003\u00d7\u200310<jats:sup>6<\/jats:sup> frozen\/thawed sexed sperm and 149 with 15\u2003\u00d7\u200310<jats:sup>6<\/jats:sup> frozen\/thawed unsexed sperm. The average pregnancy and calving rates were 21.0% and 20% for the sexed\u2010sperm AIs and 46% and 45% for the unseparated control\u2010sperm AIs respectively (p\u2003&lt;\u20030.001). The proportion of female calves derived from sexed\u2010sperm AI was 82% compared with 49% for control AI (p\u2003&lt;\u20030.01). The proportion of live and healthy calves in single births was 100% for sexed\u2010sperm AI and 97% for control AI (p\u2003&gt;\u20030.05). Our results indicate that AI with low\u2010dose sexed sperm under field conditions in commercial dairy herds without oestrus synchronization results in significantly reduced pregnancy rates compared with normal\u2010dose AI. Improved insemination strategies combined with increased sperm doses are needed before the use of sexed sperm can be of any significant benefit for the dairy and beef industry.<\/jats:p>","DOI":"10.1111\/j.1439-0531.2006.00625.x","type":"journal-article","created":{"date-parts":[[2006,2,27]],"date-time":"2006-02-27T17:51:04Z","timestamp":1141062664000},"page":"95-97","source":"Crossref","is-referenced-by-count":45,"title":["Pregnancy Rates in Lactating Holstein\u2013Friesian Cows after Artificial Insemination with Sexed Sperm"],"prefix":"10.1111","volume":"41","author":[{"given":"M","family":"Andersson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J","family":"Taponen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M","family":"Kommeri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M","family":"Dahlbom","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2006,2,27]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.theriogenology.2003.09.006"},{"key":"e_1_2_6_3_1","first-page":"254","article-title":"Fertility after low dose insemination of sexed sperm in heifers and cows under field conditions","volume":"39","author":"Bodmer M","year":"2004","journal-title":"Reprod Dom Anim"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.S0022-0302(98)75739-X"},{"key":"e_1_2_6_5_1","unstructured":"DoyleSP SeidelGEJr SchenkJL HarrickhoffLA CranDG GreenRD 1999:Artificial insemination of lactating Angus cows with sexed semen. Proceedings Western Section American Society of Animal Science Provo Utah pp.203\u2013205."},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.S0022-0302(90)78857-1"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0093-691X(97)00368-3"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0093-691X(99)91959-3"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0093-691X(99)00226-5"},{"key":"e_1_2_6_10_1","first-page":"673","article-title":"Bevruchtingsresultaten van inseminaties met diepvriessperma met verschillende aantallen spermatozoa per dosis bij het MRIJ\u2010vee","volume":"12","author":"Smidt WJ","year":"1988","journal-title":"Tijdschr. 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Diergeneeskd"},{"key":"e_1_2_6_14_1","unstructured":"VerberckmoesS 2004:Preservation of fresh bovine semen and utero\u2010tubal junction insemination in cattle.Dissertation University of Ghent Belgium ISBN 90\u20105864\u2010060\u20104. pp.139\u2013159."}],"container-title":["Reproduction in Domestic Animals"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Fj.1439-0531.2006.00625.x","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/j.1439-0531.2006.00625.x","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,10]],"date-time":"2023-10-10T06:13:48Z","timestamp":1696918428000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/j.1439-0531.2006.00625.x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2006,2,27]]},"references-count":13,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2006,4]]}},"alternative-id":["10.1111\/j.1439-0531.2006.00625.x"],"URL":"https:\/\/doi.org\/10.1111\/j.1439-0531.2006.00625.x","archive":["Portico"],"relation":{},"ISSN":["0936-6768","1439-0531"],"issn-type":[{"value":"0936-6768","type":"print"},{"value":"1439-0531","type":"electronic"}],"subject":[],"published":{"date-parts":[[2006,2,27]]}}}