Reference : Variability of major fatty acid contents in Luxembourg dairy cattle
Scientific congresses and symposiums : Paper published in a book
Life sciences : Genetics & genetic processes
Life sciences : Food science
Life sciences : Animal production & animal husbandry
http://hdl.handle.net/2268/38096
Variability of major fatty acid contents in Luxembourg dairy cattle
English
Soyeurt, Hélène [Université de Liège - ULiège > Sciences agronomiques > Zootechnie >]
Arnould, Valérie [Université de Liège - ULiège > Sciences agronomiques > Zootechnie >]
Dardenne, Pierre [> >]
Stoll, Jean [> >]
Armand, Braun [> >]
Zinnen, Quentin [> >]
Gengler, Nicolas [Université de Liège - ULiège > Sciences agronomiques > Zootechnie >]
Aug-2009
Barcelona 2009
Book of Abstracts of the 60th Annual Meeting of the European Association for Animal Production
Wageningen Academic Publishers
Nº. 15
203
Yes
No
International
978-90-8686-121-7
Wageningen
Netherlands
60th Annual Meeting of the European Association for Animal Production
24-27 August 2009
EAAP - European Federation of Animal Science
Barcelona
Spain
[en] fatty acid ; milk ; genetic
[en] Common human health concerns and imminent needs for more sustainable nutrition patterns require from dairy industry and farmers a. o. a closer look at milk fatty acid (FA) profile. Therefore up to date calibration equations using mid-infrared (MIR) spectrometry were developed permitting the estimation of FA contents in bovine milk. The aim of this study was to estimate the variability of the major FA from data collected during the Luxembourg routine milk recording. A total of 148,296 milk samples with MIR-spectra were collected from October 2007 to January 2009 on 36,522 cows belonging to 5 breeds in 718 herds and scanned by Foss MilkoScan FT6000. The contents of saturated FA, monounsaturated FA, omega-9, short chain FA, medium chain FA, and long chain FA were obtained using Belgian MIR calibration equations. Analyzes were done by a multi-trait multi-lactation animal mixed models. Fixed effects were herd*test date, lactation stage lactation number, age*lactation number, and breed effect. Random effects were herd*year of calving, permanent environment within and across lactation, animal effect, and residual effect. Breed differences as well as lactation effects were observed. Our results showed moderate heritability values suggesting the existence of a FA genetic variability. The variability of the first Luxembourg breeding values was large enough to develop selection tools for improving the nutritional quality of bovine milk fat.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/38096

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