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Measures of luteal activity postpartum to monitor the early postpartum fertility in the dairy cow

Published online by Cambridge University Press:  23 November 2017

K-J Petersson ,
B Berglund ,
E Strandberg ,
H Gustafsson ,
J A Woolliams ,
A P F Flint  and
M D Royal
K-J Petersson*
Affiliation:
Swedish University of Agricultural Sciences, Uppsala, Sweden
B Berglund
Affiliation:
Swedish University of Agricultural Sciences, Uppsala, Sweden
E Strandberg
Affiliation:
Swedish University of Agricultural Sciences, Uppsala, Sweden
H Gustafsson
Affiliation:
Swedish Dairy Association, Uppsala, Sweden
J A Woolliams
Affiliation:
Roslin Institute, Edin, United Kingdom
A P F Flint
Affiliation:
University of Nottingham, Nottingham, United Kingdom
M D Royal
Affiliation:
University of Liverpool, Liverpool, United Kingdom
*
Email: [email protected]
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Extract

A phenotypic and genetic decline in dairy cattle fertility has been reported in several countries simultaneous to the increase in genetic merit for production. In addition, an increase in atypical milk progesterone (MP4) patterns, particularly extended luteal phases, has been observed by Royal et al. (2000). One such MP4 parameter; the interval from calving to commencement of luteal activity (CLA), has been studied by Royal et al. (2002a,b; 2003) and is reported to have moderate heritability (h2), an unfavourable genetic correlation (rA)to milk yield (rA; 0.36) and a favourable rA to calving interval and interval to first service, respectively (0.39, 0.53). Although CLA is a good indicator of onset of luteal activity (LA) postpartum (pp), it does not take account of subsequent ovarian activity. The objective of this study was to investigate an alternative MP4 parameter using the proportion of MP4 samples representing LA within the first 60 days pp in both British and Swedish dairy cows.

Type
Theatre presentations
Information
Proceedings of the British Society of Animal Science , Volume 2006 , March 2006 , pp. 14
Copyright
Copyright © The American Society of International Law 2016

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References

Petersson, K.-J., Strandberg, E., Gustafsson, H., and Berglund, B.. 2006. Environmental effects on progesterone profile measures of dairy cow fertility. Anim. Reprod. Sci. 91:201-214.Google Scholar
Royal, M.D., Darwash, A.O., Flint, A.P.F., Webb, R., Woolliams, J.A., and Lamming, G.E.. 2000. Declining fertility in dairy cattle: changes in traditional and endocrine parameters of fertility. Anim. Sci. 70:487-501.Google Scholar
Royal, M.D., Flint, A.P.F., and Woolliams, J.A.. 2002a. Genetic and phenotypic relationships among endocrine and traditional fertility traits and production traits in Holstein-Friesian dairy cows. J. Dairy Sci. 85:958-967.Google Scholar
Royal, M.D., Pryce, J.E., Woolliams, J.A., and Flint, A.P.F.. 2002b. The genetic relationship between commencement of luteal activity and calving interval, Condition Score, Production and Linear Type Traits in H-F Dairy Cattle. J. Dairy Sci. 85:3071-3080.Google Scholar
Royal, M.D., Wall, E., and Flint, A.P.F.. 2003. The genetic relationship between interval in commencement of luteal activity postpartum and UK national fertility proofs for dairy cattle. Page 54 in Proc. of Br. Soc. of An. Sci. Annual Meeting, York, April (2003).CrossRefGoogle Scholar