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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...

Topics

Animals
Cattle
Female
Genetic Variation
Lactation
Male
Models, Biological
Models, Genetic
Parity
Phenotype
United States

Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

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Identifiers

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

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 29 Aug 2026. Prepared record publication-1787204-2026-08-29.1. Manifest publication-graph-cohort-2026-08-29.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 29 Aug 2026.

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