Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 478160
Title Genetic Parameters for Endocrine Fertility Traits from In-line Milk Progesterone Records in Dairy Cows
Author(s) Tenghe, A.M.M.; Bouwman, A.C.; Berglund, B.; Strandberg, E.; Veerkamp, R.F.
Source In: Proceedings, 10th World Congress of Genetics Applied to Livestock Production. - - p. 151 - 151.
Event 10th WCGALP, Vancouver, Canada, 2014-08-17/2014-08-22
Department(s) Animal Breeding and Genetics
LR - Animal Breeding & Genomics
Publication type Contribution in proceedings
Publication year 2014
Abstract In-line milk progesterone records (n = 163,145) collected from June 2009 through November 2013 for 2,274 lactations of Holstein-Friesian cows in 12 commercial herds in the Netherlands were analyzed for commencement of luteal activity (CLA), luteal activity during first 60 days in milk (LA60), proportion of samples with luteal activity (PLA), interval from commencement of luteal activity to first service, length of first luteal phase, and number of inter-ovulatory intervals before first service. Heritability (0.13, 0.10, and 0.05) and repeatability estimates (0.26, 0.21, and 0.16) were greatest for CLA, PLA and LA60, respectively, compared with other traits. Genetic correlations were 0.96 to 0.99 between these traits. This study shows that in-line P4 records can be used to define and explore several heritable endocrine fertility traits that can be used in genetic improvement of fertility by selection.
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