Genetic parameters for test day milk yields of first lactation Holstein cows by random regression models

Genetic parameters for test day milk yields of first lactation Holstein cows by random regression models

Covariance components for test day milk yield using 263 390 first lactation records of 32 448 Holstein cows were estimated using random regression animal models by restricted maximum likelihood. Three functions were used to adjust the lactation curve: the five-parameter logarithmic Ali and Schaeffer...

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Bibliographic Details
Main Authors: C.M.R. de Melo, I.U. Packer, C.N. Costa, P.F. Machado
Format: Article
Language:English
Published: Elsevier 2007-01-01
Series:Animal
Subjects:
genetic parameters
milk yield
random regression model
test day model
variance components
Online Access:http://www.sciencedirect.com/science/article/pii/S1751731107685036

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