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Article

Correlations between first lactation and lifetime performance traits of Canadian Holsteins.

Journal of dairy science - 1 Feb 1995

Jairath L K, Hayes J F, Cue R I

Abstract excerpt

Data on 82,835 Holstein cows, daughters of 703 sires and with first calvings from 1979 to 1984 in 2384 herds enrolled in Quebec Dairy Herd Analysis Service, were analyzed for relationships of first lactation traits with traits for partial and total lifetime performance using multitrait REML methodology and a linear mixed model. Effects of herd-year-season, age at first calving, and proven sires were considered to...

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PMID: 7745165
DOI: 10.3168/jds.S0022-0302(95)76653-X

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