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Article

Random regression models using different functions to model test-day milk yield of Brazilian Holstein cows.

Genetics and molecular research : GMR - 31 Oct 2011

Bignardi A B, El Faro L, Torres Júnior R A A, Cardoso V L, Machado P F, Albuquerque L G

Abstract excerpt

We analyzed 152,145 test-day records from 7317 first lactations of Holstein cows recorded from 1995 to 2003. Our objective was to model variations in test-day milk yield during the first lactation of Holstein cows by random regression model (RRM), using various functions in order to obtain adequate and parsimonious models for the estimation of genetic parameters. Test-day milk yields were grouped into...

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PMID: 22057992
DOI: 10.4238/2011.October.31.4

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