Reference : Genetic parameters of mastitis-correlated milk components in first parity dairy cows
Scientific congresses and symposiums : Unpublished conference
Life sciences : Genetics & genetic processes
Life sciences : Animal production & animal husbandry
http://hdl.handle.net/2268/69459
Genetic parameters of mastitis-correlated milk components in first parity dairy cows
English
Gillon, Alain mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Bastin, Catherine mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Soyeurt, Hélène mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Gengler, Nicolas mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
6-Aug-2010
No
International
9th World Congress on Genetics Applied to Livestock Production (WCGALP)
August 1-6, 2010
Leipzig
Germany
[en] mastitis ; milk components ; genetic correlation
[en] Ind. of lactoferrin content, ind. of Na content, and lactose content were the three most correlated milk components with somatic cell score among available milk components predicted by mid-infrared spectrometry on 590,083 test-day records from Walloon Region of Belgium collected between 2007 and 2009. Mean daily heritabilities and mean genetic correlations of these four traits were estimated using Gibbs sampling methodology applied to a multi-trait random regression test-day model with a subset of these records. Mean daily heritabilities of ind. lactoferrin content (0.34), ind. Na content (0.37) and lactose content (0.42) were higher then SCS (0.16) and mean genetic correlations were moderate (from -0.18 to -0.73), showing that these traits could be used together to describe udder health in genetic evaluations instead of SCS alone when clinical mastitis data are not available.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/69459

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