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Serum leptin concentration is a poor predictor of body fat content in lactating dairy cows

Published online by Cambridge University Press:  20 November 2017

A.R.G. Wylie ,
D.J. Devlin ,
C.S. Mayne ,
R.E. Agnew ,
D.C. Patterson ,
R.W.J. Steen  and
F.J. Gordon
A.R.G. Wylie
Affiliation:
Agricultural and Environmental Sciences Division, Department of Agriculture and Rural Development The Queen’s University of Belfast, Belfast, BT9 5PX
D.J. Devlin
Affiliation:
Agricultural and Environmental Sciences Division, Department of Agriculture and Rural Development
C.S. Mayne
Affiliation:
Agricultural and Environmental Sciences Division, Department of Agriculture and Rural Development The Queen’s University of Belfast, Belfast, BT9 5PX The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, BT26 6DR UK
R.E. Agnew
Affiliation:
Agricultural and Environmental Sciences Division, Department of Agriculture and Rural Development The Queen’s University of Belfast, Belfast, BT9 5PX The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, BT26 6DR UK
D.C. Patterson
Affiliation:
Agricultural and Environmental Sciences Division, Department of Agriculture and Rural Development The Queen’s University of Belfast, Belfast, BT9 5PX The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, BT26 6DR UK
R.W.J. Steen
Affiliation:
Agricultural and Environmental Sciences Division, Department of Agriculture and Rural Development The Queen’s University of Belfast, Belfast, BT9 5PX The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, BT26 6DR UK
F.J. Gordon
Affiliation:
Agricultural and Environmental Sciences Division, Department of Agriculture and Rural Development The Queen’s University of Belfast, Belfast, BT9 5PX The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, BT26 6DR UK
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Extract

Blood concentrations of leptin have been associated, to varying degrees, with assorted measures of fat in mammalian species. In ruminants, 0.30, 0.35 and 0.37 of the variation in leptin levels in lambs (Blache et al., 2000), older (2-7 yr) multiparous ewes (Delavaud et al., 2000) and mature, late-lactation, dairy cows (Ehrhardt et al., 2000) was attributed to variation in fat as % of liveweight (LW), backfat thickness and body condition score (BCS) respectively while a strong correlation (R_a2=0.83) between leptin and fat as % of empty body weight (EBW) was found for growing Holstein bull calves by Ehrhardt et al. (2000). The objective of the current study was to determine if leptin could be usefully related to fat in multiparous dairy cows differing widely across stages of lactation.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2002 , 2002 , pp. 93
Copyright
Copyright © The British Society of Animal Science 2002

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References

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