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Article

Use of early lactation days open records for genetic evaluation of cow fertility.

Journal of dairy science - 1 Jul 2004

Kuhn M T, VanRaden P M, Hutchison J L

Abstract excerpt

National genetic evaluations for cow fertility were introduced by the USDA in February, 2003. These evaluations, reported as daughter pregnancy rate, are based on days open. One requirement of the evaluation system is that lactations be at least 250 d in milk (DIM) to be included for analysis. The objective of this research was to develop a predictor of days open, usable in genetic evaluation, to allow for...

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PMID: 15328242
DOI: 10.3168/jds.S0022-0302(04)70048-X

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

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