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Metabolic and endocrine responses of mature and adolescent ewes to plane of nutrition during early pregnancy

Published online by Cambridge University Press:  20 November 2017

R.W. Annett ,
A.F. Carson ,
A.R.G. Wylie  and
M.A. McCoy
R.W. Annett
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down, BT26 6DR;
A.F. Carson
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down, BT26 6DR; Queen’s University of Belfast and Department of Agriculture and Rural Development (DARD), Newforge Lane, Belfast, BT9 5PX;
A.R.G. Wylie
Affiliation:
Queen’s University of Belfast and Department of Agriculture and Rural Development (DARD), Newforge Lane, Belfast, BT9 5PX;
M.A. McCoy
Affiliation:
Queen’s University of Belfast and DARD Veterinary Sciences Division, Stoney Road, Belfast, BT4 3SB
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Extract

A high plane of nutrition during early gestation has a detrimental effect on the establishment of pregnancy in adolescent but not mature ewes. Elevated insulin levels in well-fed adolescent ewes have been implicated in maintaining the anabolic drive to maternal growth at the expense of foetal tissue synthesis (Wallace et al., 1997). The adipocyte hormone, leptin has effects on food intake, body weight stasis and the gonadotrophic axis and therefore may also, like insulin, be implicated in the establishment and success of pregnancy. The objectives of the current experiment were to investigate the effects of plane of nutrition in mature and adolescent ewes during the first month of pregnancy on changes in maternal concentrations of insulin, leptin and blood metabolites.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2004 , 2004 , pp. 182
Copyright
Copyright © The British Society of Animal Science 2004

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References

Agricultural and Food Research Council (1993). Energy and Protein Requirements of Ruminants. An advisory manual prepared by the AFRC Technical Committee on Responses to Nutrients, CAB International, Wallingford, UK Google Scholar
Wallace, J.M., Silva, P. Da., Aitken, R.P. and Cruickshank, M.A., 1997. Maternal endocrine status in relation to pregnancy outcome in rapidly growing adolescent sheep. Journal of Endocrinology 155: 359–368 Google Scholar