genetic evaluations; dairy cattle; lactation records
Abstract :
[en] Direct use of test-day yields in genetic evaluations has been a major focus of research in recent years and their are numerous advantages associated with this approach as detailed by many authors (e.g., Swalve 2000). Despite considerable recent research there seems to be some confusion among people how to consider test-day records and their relationship to full lactation records. This is however a major issue if we have to consider the combination of both types of records in national or international evaluations. The objective of this report was to summarize considerations on the path from test-day records to genetic evaluations with and without the intermediate step of estimation lactation records in order to provide an underlying framework for all evaluation models
Disciplines :
Animal production & animal husbandry
Author, co-author :
Gengler, Nicolas ; Université de Liège - ULiège > Gembloux Agro-Bio Tech
Language :
English
Title :
Considerations on the path from test-day records to national and international genetic evaluations and its consequences.
Publication date :
23 August 2002
Event name :
7th world congress on genetics applied to livestock production
Event organizer :
American Society of Animal Science (ASAS)
Event place :
Montpellier, France
Event date :
19-23 August 2002
Audience :
International
Main work title :
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production
Main work alternative title :
[en] Session 01. Breeding ruminants for milk production
