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Nutritional status of ewes in early and mid pregnancy: 1. Effects of plane of nutrition on ewe reproduction and offspring performance

Published online by Cambridge University Press:  23 November 2017

C Munoz ,
A F Carson ,
L E R Dawson ,
M McCoy  and
A Gordon
C Munoz*
Affiliation:
Agriculture Research Institute of Northern Ireland, Hillsborough, Co Down, United Kingdom
A F Carson
Affiliation:
Agriculture Research Institute of Northern Ireland, Hillsborough, Co Down, United Kingdom
L E R Dawson
Affiliation:
Agriculture Research Institute of Northern Ireland, Hillsborough, Co Down, United Kingdom
M McCoy
Affiliation:
Veterinary Science Division, Belfast, United Kingdom
A Gordon
Affiliation:
Department of Agriculture and Rural Development for Northern Ireland, Belfast, United Kingdom
*
Email: camunoz@inia.cl
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Extract

Alterations in utero result in adaptations that can alter the physiology of adult offspring a process known as “foetal programming”. Recent studies have shown that in adolescent ewes, low planes of nutrition in early pregnancy result in better reproductive performance (Annett and Carson, 2004). In adult ewes, responses are less clear. Some studies indicate no effect of nutrition level in early pregnancy on subsequent lamb output (Annett and Carson, 2004), whereas others indicate that low planes of nutrition in early pregnancy, reduced lamb output at weaning (Smeaton et al., 1999). Differences between studies may be due to residual effects of early pregnancy feeding on mid pregnancy. Consequently, the aim of this study was to evaluate the effect of different planes of nutrition in early and mid pregnancy on maternal and offspring performance.

Type
Theatre presentations
Information
Proceedings of the British Society of Animal Science , Volume 2006 , March 2006 , pp. 5
Copyright
Copyright © The American Society of International Law 2016

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References

Agricultural and Food Research Council (1993). Energy and protein requirements of ruminants. Advisory manual prepared by the AFRC Technical Committee on Responses to Nutrient, CAB International, Wallingford, UK Google Scholar
Annett, R.W. and Carson, A.F. (2004). Effect of post-mating nutrition on lamb output, foetal development and post-natal lamb performance in mature and adolescent ewes. Proceedings of BSAS, p. 89 Google Scholar
Munoz, C., Carson, A.F., McCoy, M. and Dawson, L.E.R. (2006). Nutritional status of ewes in early and mid pregnancy: 2. Effect of selenium supplementation on ewe reproduction and offspring performance. Proceedings of BSAS , p7 Google Scholar
Smeaton, D., Webby, R. and Tarbotton, I. (1999). Nutritional effects in early pregnancy on lamb production of Finnish Landrace x Romney ewes. Proceedings of NZSAP, 59: 108-110 Google Scholar