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Article

Phenotypic and genetic relationships between age at first calving, its component traits, and survival of heifers up to second calving.

Journal of dairy science - 1 Jan 2018

Heise Johannes, Stock Kathrin F, Reinhardt Friedrich, Ha Ngoc-Thuy, Simianer Henner

Abstract excerpt

The aim of this study was to answer the question whether models for genetic evaluations of longevity should include a correction for age at first calving (AFC). For this purpose, phenotypic and genetic relationships between AFC, its component traits age at first insemination (AFI) and interval from first to last insemination (FLI), and survival of different periods of the first lactation (S1: 0 to 49 d, S2: 50 to...

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Identifiers

PMID: 29128222
DOI: 10.3168/jds.2017-12957

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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