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Article

Method and effect of adjustment for heterogeneous variance.

Journal of dairy science - 1 Dec 1991

Wiggans G R, VanRaden P M

Abstract excerpt

Lactation records were standardized for differing genetic and error variances across herds and over time based on phenotypic variance for each herd-year-parity group. Each herd-year-parity phenotypic variance estimate was combined with those of adjacent years and regressed toward a region-year-parity variance. Heritability was assumed to be .25 at mean variance within year and to range from .2 for herds with...

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Identifiers

PMID: 1787204
DOI: 10.3168/jds.S0022-0302(91)78631-1

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