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Monitoring reproductive performance in beef suckler cows by milk progesterone analysis.

Published online by Cambridge University Press:  05 November 2021

G.E. Mann ,
R. Keatinge ,
M. Hunter ,
B.A. Hedley  and
G.E. Lamming
G.E. Mann
Affiliation:
School of Biology, Animal Physiology Section, University of Nottingham, Sutton Bonington, Loughborough, Leics, LE12 5RD, UK
R. Keatinge
Affiliation:
ADAS Redesdale, Rochester, Otterburn, Newcastle upon Tyne, NE19 1SB, UK
M. Hunter
Affiliation:
School of Biology, Animal Physiology Section, University of Nottingham, Sutton Bonington, Loughborough, Leics, LE12 5RD, UK
B.A. Hedley
Affiliation:
ADAS Redesdale, Rochester, Otterburn, Newcastle upon Tyne, NE19 1SB, UK
G.E. Lamming
Affiliation:
School of Biology, Animal Physiology Section, University of Nottingham, Sutton Bonington, Loughborough, Leics, LE12 5RD, UK
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Extract

Milk progesterone monitoring in dairy cattle has provided a valuable insight into the reproductive cycle during the post-partum and mating periods (Lamming et al., 1981; Darwash and Lamming, 1997). In this study a similar approach was applied to suckler cows. The objective was to compare the reproductive performance of two contrasting genotypes with a view to improving output from commercial herds. Such herds produce an average of 91 live calves per 100 cows mated (MLC, 1996).

Type
Programme
Information
Proceedings of the British Society of Animal Science , Volume 1998 , 1998 , pp. 189
Copyright
Copyright © The British Society of Animal Science 1998

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References

Darwash, A.O. & Lamming, G.E. 1997. Abnormal ovarian patterns as a cause of subfertility in dairy cows. Cattle Practice 5: 3–7.Google Scholar
Lamming, G.E., Wathes, D.C. & Peters, A.R. 1981. Endocrine patterns in the post-partum cow. Journal of Reproduction and Fertility supp l30: 155–170.Google Scholar
MLC 1996 Beef yearbook. Meat and Livestock Commission, 1996Google Scholar