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An estimate of the nutrients utilized for pregnancy by Merino sheep

Published online by Cambridge University Press:  09 March 2007

J. P. Langlands  and
H. A. M. Sutherland
J. P. Langlands
Affiliation:
C.S.I.R.O., Pastoral Research Laboratory, Armidale, NSW, Australia
H. A. M. Sutherland
Affiliation:
C.S.I.R.O., Pastoral Research Laboratory, Armidale, NSW, Australia
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Abstract

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1. Fifty-one pregnant fine-wool Merino ewes were slaughtered at intervals during pregnancy. The gravid uteri were dissected and were separated into uterus, membrane and fluid, and foetus fractions, which were analysed separately for water, nitrogen, ash, fat, calcium, phosphorus, sodium and potassium content.

2. Uteri from twenty-one similar non-pregnant ewes were also analysed for these constituents.

3. A number of relationships between the composition of the gravid uterus minus the composition of the uterus taken from non-pregnant sheep, and time from conception were calculated.

4. The rate of nutrient deposition was calculated from these relationships and estimates were made of the nutrients utilized for pregnancy.

Type
Research Article
Information
British Journal of Nutrition , Volume 22 , Issue 2 , May 1968 , pp. 217 - 227
Copyright
Copyright © The Nutrition Society 1968

References

Agricultural Research Council (1965). The Nutrient Requirements of Farm Livestock. No. 2. Ruminants. London: Agricultural Research Council.Google Scholar
Armstrong, D. G. & Blaxter, K. L. (1965). Publs Eur. Ass. Anim. Prod. no. 11, p. 59.Google Scholar
Barcroft, J., Kennedy, J. A. & Mason, M. F. (1939). J. Physiol., Lond. 95, 159.CrossRefGoogle Scholar
Cloete, J. H. L. (1939). Onderstepoort J. vet. Sci. 13, 417.Google Scholar
Duncan, D. L. (1958). Nutr. Abstr. Rev. 28, 695.Google Scholar
Fogg, D. N. & Wilkinson, N. T. (1958). Analyst, Lond. 83, 406.CrossRefGoogle Scholar
Graham, N. McC. (1964 a). Aust. J. agric. Res. 15, 127.Google Scholar
Graham, N. McC. (1964 b). Aust. J. agric. Res. 15, 100.Google Scholar
Jakobsen, P. E. (1957). Beretn. Forsøgslab. Copenh. no. 299.Google Scholar
MacDowell, E. C. & Allen, E. (1927). Proc. Soc. exp. Biol. Med. 24, 672.Google Scholar
Mitchell, H. H. (1962). Comparative Nutrition of Man and Domestic Animals. Vol. 1. New York and London: Academic Press Inc.Google Scholar
Mitchell, H. H., Carroll, W. E., Hamilton, T. S. & Hunt, G. E. (1931). Bull. Ill. agric. Exp. Stn no. 375.Google Scholar
National Research Council (1957). Publs natn. Res. Coun., Wash. no. 504.Google Scholar
Radford, H. M., Watson, R. H. & Wood, G. F. (1960). Aust. vet. J. 36, 57.CrossRefGoogle Scholar
Russel, A. J. F., Doney, J. M. & Reid, R. L. (1967). J. agric. Sci., Camb. 68, 359.CrossRefGoogle Scholar
Wallace, L. R. (1948). J. agric. Sci., Camb. 38, 243.CrossRefGoogle Scholar