Genetic parameters of test-day somatic cell score estimated with a random regression model

作者: G de Jong , A Harbers , A de Roos

DOI:

关键词:

摘要: As of May 2002, the national genetic evaluation for milk, fat and protein production in The Netherlands is performed with a random regression test-day model. This model also advantageous evaluating somatic cell score (SCS), because it can better account environmental effects at level, heterogeneous variances within across lactation correlations lower than one. A SCS requires parameters. aim this study was to estimate parameters

参考文章(10)
Minna Koivula, Esa Mäntysaari, Enyew Negussie, Genetic parameters for test-day somatic cell count at different stages of lactation in finnish ayrshire cattle Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 9.. pp. 0- 4 ,(2002)
G. de Jong, A. G. F. Harbers, A. P. W. de Roos, Herd specific random regression curves in a test-day model for protein yield in dairy cattle. Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 1.. pp. 1- 4 ,(2002)
A. M. Winkelman, Random regression models for genetic evaluation of somatic cell score in New Zealand dairy sires. Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 9.. ,(2002)
J. Jamrozik, A. Bagnato, A. B. Samore, Paul J Boettcher, A. F. Groen, Genetic parameters for production traits and somatic cell scores estimated with a multiple trait random regression model in Italian Holsteins Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 1. pp. 63- 66 ,(2002)
David Lofsvold, Mark Kirkpatrick, Michael Bulmer, Analysis of the inheritance, selection and evolution of growth trajectories. Genetics. ,vol. 124, pp. 979- 993 ,(1990) , 10.1093/GENETICS/124.4.979
M. Haile-Mariam, M.E. Goddard, P.J. Bowman, Estimates of Genetic Parameters for Daily Somatic Cell Count of Australian Dairy Cattle Journal of Dairy Science. ,vol. 84, pp. 1255- 1264 ,(2001) , 10.3168/JDS.S0022-0302(01)74587-0
L Janss, G de Jong, MCMC based estimation of variance components in a very large dairy cattle data set Interbull Bulletin. pp. 63- 68 ,(1999)
M.H. Pool, L.L.G. Janss, T.H.E. Meuwissen, Genetic parameters of Legendre polynomials for first parity lactation curves Journal of Dairy Science. ,vol. 83, pp. 2640- 2649 ,(2000) , 10.3168/JDS.S0022-0302(00)75157-5