The use of test day (TD) models has received considerable attention for the analysis of milk yield during recent years. The TD model approach better accounts for temporary environmental effects than do traditional lactation models, avoids the use of extended records and potentially facilitates implementation of cheaper recording schemes (Swalve, 2000 ; Jensen, 2001

C. N Costa, C. MR Melo, M. L Martinez, C. HC Machado, I. U Packer

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 2002. Session 17, , 17.07, 2002
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