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Improving dairy cow fertility using milk-based indicator traits
Bastin, Catherine; Vandenplas, Jérémie; Gengler, Nicolas
2014In Proceedings of the 10th World Congress on Genetics Applied to Livestock Production
Peer reviewed
 

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Keywords :
dairy cattle; fertility; genetic correlation
Abstract :
[en] Improvement of dairy cow fertility by means of genetic selection has become increasingly important over the last decades. Because fertility traits are difficult to measure and have low heritabilities, indicator traits are of interest to supplement the prediction of genetic merit for female fertility. This paper examines milk-based traits that could be potential predictor of fertility: changes in protein and fat composition, fat to protein ratio, urea, lactose, ketone bodies, and mid-infrared prediction of body energy traits. The pattern of genetic correlations between these traits and fertility over days in milk is likely related to the cow’s energy balance state. Furthermore, changes in milk fatty acid profile were demonstrated as good potential predictors of fertility. Finally, additional research is warranted to investigate the association over the lactation between fertility and changes in milk biomarkers, potentially predicted by mid-infrared analysis of milk.
Disciplines :
Animal production & animal husbandry
Genetics & genetic processes
Author, co-author :
Bastin, Catherine ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Vandenplas, Jérémie ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Gengler, Nicolas  ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Language :
English
Title :
Improving dairy cow fertility using milk-based indicator traits
Publication date :
18 August 2014
Event name :
10th World Congress on Genetics Applied to Livestock Production
Event organizer :
ASAS
Event place :
Vancouver, Canada
Event date :
17-21 August 2014
By request :
Yes
Audience :
International
Main work title :
Proceedings of the 10th World Congress on Genetics Applied to Livestock Production
Publisher :
American Society of Animal Science
Peer reviewed :
Peer reviewed
Available on ORBi :
since 28 November 2014

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