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Article

Accounting for heterogeneous variances in multitrait evaluation of Jersey type traits.

Journal of dairy science - 1 Aug 2006

Gengler N, Wiggans G R, Thornton L L M, Wright J R, Druet T

Abstract excerpt

The multitrait genetic evaluation system for type traits was modified to estimate adjustments for heterogeneous variance (HV) simultaneously with estimated breeding values (EBV) for final score and 14 linear traits. Each variance within herd, year, and parity was regressed toward a predicted variance, which was determined by fitting a model with fixed effects of the mean final score for herd, size of the...

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Source

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PMID: 16840631
DOI: 10.3168/jds.S0022-0302(06)72588-7

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