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Observations on the use of plasma free fatty acid concentrations in the determination of maintenance requirements of sheep

Published online by Cambridge University Press:  27 March 2009

J. M. Doney
Affiliation:
Hill Farming Research Organisation, 29 Lauder Road, Edinburgh

Summary

The objective of the investigations reported in this paper was to examine the possibility of using plasma free fatty acid concentrations as a means of estimating food requirements for maintenance purposes in sheep. Estimates derived in these investigations are considered to be less satisfactory than those based on live-weight change. It is concluded, however, that the technique merits further consideration, and that, with more precise knowledge of FFA concentrations in maintenance-fed sheep and of the FFA: food intake response curve, it could provide a useful alternative means of estimating maintenance requirements.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1969

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References

REFERENCES

Annison, E. F. (1960). Plasma non-esterified fatty acids in sheep. Aust. J. agric. Res. 11, 5864.CrossRefGoogle Scholar
Doney, J. M. & Russel, A. J. F. (1969). Differences amongst breeds of sheep in food requirements for maintenance and live-weight change. J. agric. Sci., Comb. 71, 343–9.CrossRefGoogle Scholar
Patterson, D. S. P. (1963). Some observations on the estimation of non-esterified fatty acid concentrations in cow and sheep plasma. Res. vet. Sci. 4, 230–7.CrossRefGoogle Scholar
Patterson, D. S. P., Burns, K. N., Cunningham, N. F., Nancy, Herbert C. & Saba, N. (1964). Plasma concentrations of glucose and non-esterified fatty acids (N.E.P.A.) in the pregnant and lactating ewe and the effect of dietary restriction. J. agric. Sci., Camb. 62, 253–62.CrossRefGoogle Scholar
Reid, R. L. & Hinks, N. T. (1962). Studies on the carbohydrate metabolism of sheep. XVII. The metabolism of glucose, free fatty acids, ketones, and amino acids in late pregnancy and lactation. Aust. J. agric. Res. 13, 1112–23.CrossRefGoogle Scholar
Russel, A. J. F., Doney, J. M. & Reid, R. L. (1967). The use of biochemical parameters in controlling nutritional state in pregnant ewes, and the effect of undernourishment during pregnancy on lamb birthweight. J. agric. Sci., Camb. 68, 351–8.CrossRefGoogle Scholar
Taylor, St C. S. & Young, G. B. (1964). Variation in growth and efficiency in twin calves. J. agric. Sci., Camb. 62, 225–36.CrossRefGoogle Scholar
West, C. E. & Annison, E. F. (1964). Metabolism of palmitate in sheep. Biochem. J. 92, 573–8.CrossRefGoogle ScholarPubMed