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Genetic Relationships of Fertility Disorders with Reproductive Traits in Canadian Holsteins

Tuesday, August 19, 2014: 5:45 PM
Bayshore Grand Ballroom D (The Westin Bayshore)
Astrid Koeck , Centre for Genetic Improvement of Livestock, University of Guelph, Guelph, ON, Canada
Filippo Miglior , Center for Genetic Improvement of Livestock, University of Guelph, Guelph, ON, Canada
Janusz Jamrozik , Center for Genetic Improvement of Livestock, University of Guelph, Guelph, ON, Canada
David F Kelton , Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
Flavio S Schenkel , Center for Genetic Improvement of Livestock, University of Guelph, Guelph, ON, Canada
Abstract Text: This study is part of a larger project whose overall objective is to develop genetic evaluations for resistance to diseases in Canadian dairy cattle. The goal of this study was to investigate the genetic relationships of retained placenta, metritis and cystic ovaries with calving and fertility traits. Moderate to high genetic correlations between maternal calving traits and fertility disorders suggest that genetic selection for better calving ability will also improve resistance against fertility disorders, especially retained placenta and metritis. Genetic correlations between fertility disorders and fertility traits were also favorable. Thus, selection against fertility disorders will result in improvement of fertility. Overall the results of the present study showed that data from the Canadian disease recording system can be used for genetic evaluations of fertility disorders.

Keywords:

dairy cattle

fertility disorders

calving

reproduction

See more of: Genetics of Trait Complexes - Reproduction
See more of: Genetics of Trait Complexes: Reproduction
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