Multivariate threshold model analysis of clinical mastitis in multiparous norwegian dairy cattle

Journal of Dairy Science
B HeringstadG Klemetsdal

Abstract

A Bayesian multivariate threshold model was fitted to clinical mastitis (CM) records from 372,227 daughters of 2411 Norwegian Dairy Cattle (NRF) sires. All cases of veterinary-treated CM occurring from 30 d before first calving to culling or 300 d after third calving were included. Lactations were divided into 4 intervals: -30 to 0 d, 1 to 30 d, 31 to 120 d, and 121 to 300 d after calving. Within each interval, absence or presence of CM was scored as "0" or "1" based on the CM episodes. A 12-variate (3 lactations x 4 intervals) threshold model was used, assuming that CM was a different trait in each interval. Residuals were assumed correlated within lactation but independent between lactations. The model for liability to CM had interval-specific effects of month-year of calving, age at calving (first lactation), or calving interval (second and third lactations), herd-5-yr-period, sire of the cow, plus a residual. Posterior mean of heritability of liability to CM was 0.09 and 0.05 in the first and last intervals, respectively, and between 0.06 and 0.07 for other intervals. Posterior means of genetic correlations of liability to CM between intervals ranged from 0.24 (between intervals 1 and 12) to 0.73 (between intervals 1 and 2)...Continue Reading

References

Oct 1, 1986·Journal of Dairy Science·J L Foulley, D Gianola
Mar 5, 2003·Journal of Dairy Science·B HeringstadK A Welgel
Jan 1, 1983·Genetics, Selection, Evolution : GSE·D Gianola, J Foulley
Jan 1, 1984·Genetics, Selection, Evolution : GSE·J Foulley, D Gianola
Jan 1, 1986·Genetics, Selection, Evolution : GSE·I HöscheleD Gianola
Jan 1, 1987·Genetics, Selection, Evolution : GSE·J FoulleyI Höschele

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Citations

Apr 6, 2012·Genetics, Selection, Evolution : GSE·Jessica FranzénErling Strandberg
Nov 26, 2015·Animal : an International Journal of Animal Bioscience·A Govignon-GionV Ducrocq
Nov 13, 2014·Animal : an International Journal of Animal Bioscience·C Egger-DannerK F Stock
Jul 25, 2006·Preventive Veterinary Medicine·Marie WolfováJochen Wolf
Feb 22, 2017·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·S ErikssonW F Fikse
Sep 19, 2009·Journal of Dairy Science·A I VazquezY M Chang
Sep 13, 2006·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·Y-M ChangG Klemetsdal
Apr 12, 2006·Journal of Dairy Science·M G GondaB W Kirkpatrick
Jul 1, 2007·Animal : an International Journal of Animal Bioscience·S GädeE Kalm
Jul 27, 2007·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·S KulbergI Olsaker
Jan 13, 2009·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·I Misztal
Aug 1, 2009·Animal : an International Journal of Animal Bioscience·E CarlénE Strandberg
May 6, 2019·Journal of Dairy Science·C DreherJ Bennewitz
Jun 17, 2009·Journal of Dairy Science·M A Pérez-CabalR Alenda
Apr 22, 2015·Reproduction, Fertility, and Development·Kamilah E GrantErdogan Memili
Mar 8, 2012·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·A I VazquezK A Weigel

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