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Adding value to test-day data by using modified best prediction method
Gillon, Alain; Abras, Sven; Mayeres, Patrick et al.
2010In ICAR Technical Series, 14, p. 171-178
 

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Keywords :
lactation yields computation; modified best prediction; test-day model; management tools
Abstract :
[en] Computation of lactation yields from test-day data has lost much of its importance for genetic evaluations as the use of test-day models is currently quite widespread. In the other hand its interest for intra-farm management is increasing as a base for advanced management tools. The first and principal aim of this study was to develop a method which takes into account advantages and disadvantages of existing methods, and to test its potential to provide useful management tools to dairy farmers. A test-day model with modifications to able daily run and management tools was developed. Because of its similarities with best prediction, the method developed here was called modified best prediction. The second objective was to compare the accuracy of this new method with best prediction and test interval methods. Modified best prediction showed good results for predicting daily yields and was slightly better than best prediction for lactation yields prediction. Management tools obtained with modified best prediction are explained.
Disciplines :
Genetics & genetic processes
Animal production & animal husbandry
Author, co-author :
Gillon, Alain ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Abras, Sven;  Association wallonne de l'elevage
Mayeres, Patrick;  Association wallonne de l'elevage
Bertozzi, Carlo;  Association wallonne de l'elevage
Gengler, Nicolas  ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Language :
English
Title :
Adding value to test-day data by using modified best prediction method
Publication date :
November 2010
Event name :
37th ICAR Session
Event organizer :
ICAR
Event place :
Riga, Latvia
Event date :
31st May to 4th June, 2010
Audience :
International
Journal title :
ICAR Technical Series
ISSN :
1563-2504
Publisher :
E. Skujina, E. Galvanoska, O. Leary & C. Mosconi, Rome, Italy
Special issue title :
Proceedings of the 37th ICAR Biennial Session, Riga, Latvia
Volume :
14
Pages :
171-178
Available on ORBi :
since 02 January 2011

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