ORBi: Bastin Catherine - Genetic correlations among body condition score, yield and fertility in multiparous cows using random regression models

Reference : Genetic correlations among body condition score, yield and fertility in multiparous cows...


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Life sciences : Animal production & animal husbandry Life sciences : Genetics & genetic processes
	To cite this reference:	http://hdl.handle.net/2268/81833

Title :	Genetic correlations among body condition score, yield and fertility in multiparous cows using random regression models
Language :	English
Author, co-author :	Bastin, Catherine [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
	Gillon, Alain [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
	Massart, Xavier [Association Wallonne de l'Elevage > Recherche et Développement > > >]
	Bertozzi, Carlo [Association Wallonne de l'Elevage > Recherche et Développement > > >]
	Vanderick, Sylvie [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
	Gengler, Nicolas [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Publication date :	Aug-2010
Main document title :	Proceedings of the 9th World Congress on Genetics Applied to Livestock Production
Publisher :	German Society for Animal Science
Peer reviewed :	Yes
On invitation :	No
Audience :	International
ISBN :	978-3-00-031608-1
City :	Giessen
Country :	Germany
Event name :	9th World Congress on Genetics Applied to Livestock Production (WCGALP)
Event date :	August 1-6, 2010
Event place (city) :	Leipzig
Event country :	Germany
Abstract :	[en] Genetic correlations between body condition score (BCS) in lactation 1 to 3 and four economically important traits (days open, 305-days milk, fat, and protein yields recorded in the first 3 lactations) were estimated on about 12,500 Walloon Holstein cows using 4-trait random regression models. Results indicated moderate favorable genetic correlations between BCS and days open (from -0.46 to -0.62) and suggested the use of BCS for indirect selection on fertility. However, unfavorable genetic correlations between BCS and yields (from -0.16 to -0.71) indicated that selection on BCS would have deleterious effects on milk, fat, and protein yields, especially in lactation greater than 1.
Permalink :	http://hdl.handle.net/2268/81833

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