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Article

Phenotypic relationships between the interval from calving to first luteal activity and fertility in a seasonal dairy production system.

Animal reproduction science - 1 Nov 2007

McNaughton L R, Sanders K M, Pryce J E, Bracefield G E, Harcourt S J, Spelman R J

Abstract excerpt

In seasonal dairy production systems a high level of reproductive performance is required to maintain a 365-day calving interval. Compared with many countries New Zealand dairy cattle are fertile, with an average calving interval of 368 days and first service conception rates of around 55%. However, fertility has been demonstrated to have declined over the past 15-years. An extended interval from calving to first...

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Identifiers

PMID: 17088028
DOI: 10.1016/j.anireprosci.2006.10.014

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 5 Sept 2026. Manifest publication-graph-cohort-2026-09-05.1.

Source receipt: pubmed, retrieved 5 Sept 2026.

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