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Effect of level of food intake in mid and late pregnancy on the performance of breeding ewes

Published online by Cambridge University Press:  02 September 2010

S. C. Wilkinson  and
D. M. B. Chestnutt
S. C. Wilkinson
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR
D. M. B. Chestnutt
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR
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Abstract

In three experiments pregnant ewes (mean weight 72·5 kg) were subjected to different planes of nutrition on grass silage-based diets during mid pregnancy and, in factorial designed trials with ad libitum silage or ad libitum silage + concentrates in late pregnancy. The high plane of mid-pregnancy nutrition resulted in an average gain of 11·5 kg between weeks 7 and 14 of pregnancy while the low plane gave an average loss of 3·5 kg during this period. These differences did not affect lamb birth weight but ewes on the high plane were 7·2 kg heavier after lambing than those on the low plane. The effect of plane of nutrition during mid pregnancy on silage intake during late pregnancy was variable but there was some evidence of a greater reduction in intake during the last few weeks of pregnancy following the high plane of mid-pregnancy nutrition. The higher plane of nutrition in late pregnancy resulted in higher ewe live weights as well as higher lamb birth weights and highest lamb birth weights occurred following restriction in mid pregnancy and a high plane of nutrition in late pregnancy.

Plasma 3-hydroxybutyrate levels were variable but there was little evidence of an effect of mid-pregnancy nutrition although levels appeared to be increased by the low plane of nutrition in late pregnancy.

Type
Research Article
Information
Animal Production , Volume 47 , Issue 3 , December 1988 , pp. 411 - 419
Copyright
Copyright © British Society of Animal Science 1988

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References

REFERENCES

Bennett, D., Axi-Lsen, A. and Chapman, H. W. 1964. The effect of nutritional restriction during early pregnancy on numbers of lambs born. Proceedings of the Australian Society of Animal Production 5: 70–71.Google Scholar
Evermt, G. C. 1964. Maternal undernutrition and retarded foetal development in Merino sheep. Nature, London 201: 1341–1342.Google Scholar
Everitt, G. C. 1966. Maternal feed consumption and foetal growth in Merino sheep. Proceedings of the Australian Society of Animal Production 6: 91–101.Google Scholar
Everitt, G. C. 1967. Residual effects of prenatal nutrition on the post-natal performance of Merino sheep. Proceedings of the New Zealand Society of Animal Production 27: 52–68.Google Scholar
Foot, J. Z. and Greenhalgh, J. F. D. 1969. The effect of previous dietary restriction on the voluntary intake of food by sheep in late pregnancy. Animal Production 11: 279–280 (Abstr.).Google Scholar
Hodge, R. W. 1966. The effect of nutritional restriction during early and mid pregnancy on the reproductive performance of crossbred ewes. Australian Journal of Experimental Agriculture and Animal Husbandry 6: 311–313.CrossRefGoogle Scholar
Meat and Livestock Commission. 1981. Feeding the Ewe. 2nd ed. Sheep Improvement Services, Bletchley.Google Scholar
Ministry of Agriculture, Fisheries and Food, Department of Agriculture and Fisheries for Scotland and Department of Agriculture for Northern Ireland. 1975. Energy allowances and feeding systems for ruminants. Technical Bulletin 33. Her Majesty's Stationery Office, London.Google Scholar
Robinson, J. J. 1973. Some aspects of ewe nutrition. Veterinary Record 92: 602–606.CrossRefGoogle ScholarPubMed
Robinson, J. J. 1977. The influence of maternal nutrition on ovine foetal growth. Proceedings of the Nutrition Society 36: 9–16.CrossRefGoogle ScholarPubMed
Robinson, J. J. 1981. Prenatal growth and development in the sheep and its implications for the viability of the newborn lamb. Livestock Production Science 8: 273–281.CrossRefGoogle Scholar
Robinson, J. J., Smart, R. I. and Pennie, K. 1978. The energy requirements of twin-bearing ewes in late pregnancy and the extent of body tissue mobilization. Animal Production 26: 390–391 (Abstr.).Google Scholar
Russel, A. J. F. 1984. Means of assessing the adequacy of nutrition of pregnant ewes. Livestock Production Science 11: 429–436.CrossRefGoogle Scholar
Russel, A. J. F. 1985. Nutrition of the pregnant ewe. In Practice, 01, pp. 23–28.Google Scholar
Russel, A. J. F., Doney, J. M. and Gunn, R. G. 1969. Subjective assessment of body fat in live sheep. Journal of Agricultural Science, Cambridge 72: 451–454.CrossRefGoogle Scholar
Russel, A. J. F. and Foot, J. Z. 1973. The effect of level of nutrition at two stages of pregnancy on the performance of primiparous ewes. Proceedings of the Nutrition Society 32: 27A–28A.Google ScholarPubMed
Wallace, L. R. 1948. The growth of lambs before and after birth in relation to the level of nutrition. Parts I, II and III. Journal of Agricultural Science, Cambridge 38: 93–153, 243–302, 367–401.CrossRefGoogle Scholar
Wilkinson, S. C. and Chestnutt, D. M. B. 1988. Effect of unwilted and wilted grass silage on the intake and performance of pregnant ewes at varying levels of concentrate feeding. Animal Production 46: 63–70.Google Scholar