Use of sexed semen and its effect on conception rate, calf sex, dystocia, and stillbirth of Holsteins in the United States

Journal of Dairy Science
H D NormanR H Miller

Abstract

Use of sexed semen for artificial insemination of US Holstein heifers (1.3 million breedings) and cows (10.8 million breedings) in Dairy Herd Improvement herds was characterized by breeding year, parity, service number, region, herd size, and herd milk yield. Sexed semen was used for 1.4, 9.5, and 17.8% of all reported breedings for 2006, 2007, and 2008, respectively, for heifers, and for 0.1, 0.2, and 0.4%, respectively, for cows. For 2008 sexed semen breedings, 80.5 and 68.6% of use was for first services of heifers and cows, respectively. For cows, 63.1% of 2008 sexed semen use was for first parity. Mean sexed semen use within herd was the greatest for heifers in the Southwest (36.2%) and for cows in the Mideast (1.3%). Mean sexed semen use increased for heifers but changed little for cows as either herd size or herd mean milk yield increased. Availability of sexed semen was examined for Holstein bulls in active AI service; of 700 bulls born after 1993, 37% had sexed semen marketed by mid August 2009. Active AI bulls with marketed sexed semen were superior to average active AI bulls for evaluations of yield traits, productive life, somatic cell score, daughter pregnancy rate, service-sire calving ease, service-sire stillbirt...Continue Reading

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Citations

Nov 14, 2012·Reproduction : the Official Journal of the Society for the Study of Fertility·D RathS Washausen
Apr 1, 2014·Animal : an International Journal of Animal Bioscience·S T ButlerL Shalloo
Apr 1, 2014·Animal : an International Journal of Animal Bioscience·J A McGetrickS D Carrington
Apr 1, 2014·Animal : an International Journal of Animal Bioscience·G E Seidel
Sep 8, 2015·Journal of Dairy Science·H W BarkemaD F Kelton
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Apr 1, 2012·Asian-Australasian Journal of Animal Sciences·Hadi AtashiAnise Asaadi
Dec 17, 2014·Journal of Dairy Science·N Mohd NorH Hogeveen
Apr 20, 2014·Theriogenology·O BurfeindW Heuwieser
Aug 13, 2013·Journal of Dairy Science·Katelyn McCullockWilliam Wailes
Apr 25, 2009·Journal of Dairy Science·H N SchlesserM H Healey
Aug 14, 2012·Journal of Dairy Science·B Fuerst-Waltl, C Fuerst
Jan 10, 2017·PloS One·Amy V GillespieDai H Grove-White
Feb 20, 2018·Journal of Dairy Science·D J CottleA G Fahey
Jul 17, 2018·Reproduction in Domestic Animals = Zuchthygiene·Ali JabarzarehVictor Cabrera
Nov 7, 2017·Asian-Australasian Journal of Animal Sciences·Sahereh Joezy-Shekalgorabi, Albert De Vries
Nov 12, 2013·Journal of Dairy Science·L BonillaP J Hansen
Jun 9, 2020·Journal of Dairy Science·C MaicasS T Butler

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