Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-14T22:21:10.919Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies on magnesium in ruminant nutrition

8.* Effect of increased intakes of potassium and water on the metabolism of magnesium, phosphorus, sodium, potassium and calcium in sheep

Published online by Cambridge University Press:  09 March 2007

N. F. Suttle  and
A. C. Field
N. F. Suttle
Affiliation:
Moredun Institute, Edinburgh 9
A. C. Field
Affiliation:
Moredun Institute, Edinburgh 9
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

1. In expt 1 daily supplements of 0 or 27–28 g potassium, with 0 or 7·5 1. water, were given to each of eight fistulated wether sheep on a hay and concentrate diet in two 4 × 4 latin square experiments. Faeces were collected for the last 4 days of, and urine throughout, 10-day treatment periods.

2. Adding K to the diet decreased the urinary output of magnesium by 33% (P < 0·001) and significantly increased those of phosphorus, sodium and calcium by 98, 76 and 150%, respectively. Faecal outputs of Mg and K were increased, whereas that of P was decreased. The retentions of P and Na tended to be decreased, whereas that of K was increased (P < 0·001). Mg in serum was decreased by 0·4 mg/100 ml (P < 0·05) and K increased by 4·9 mg/100 ml (P < 0·001).

3. Increasing the water intake increased the urinary outputs of Mg, P, Na and Ca by 33, 165, 47 and 200%. The faecal output of Ca was increased and the retentions of Mg, P and Ca were decreased (P < 0·01).

4. The effects of water and K were generally independent, but interactions affected the urinary outputs of P and K and the retention of K.

5. The increases in urinary Na output were three- and eight-fold greater during the first 3 days of increased water and K intakes than during the balance study.

6. In expt 2, mineral balance studies were conducted before and after supplementing the diet with potassium acetate, using five wethers from Expt 1. K intakes were similar to those of Expt 1. The effects of potassium acetate and KCl were generally similar qualitatively but the acetate produced greater decreases in urinary Mg and faecal P outputs and greater increases in urinary Na and K outputs than KCl. K in serum was increased by 28 mg/100 ml but Mg was not affected.

7. The nature of these responses in discussed with particular reference to the aetiology of hypomagnesaemic tetany.

Type
Research Article
Information
British Journal of Nutrition , Volume 21 , Issue 4 , December 1967 , pp. 819 - 831
Copyright
Copyright © The Nutrition Society 1967

References

Allcroft, R. (1960). Proc. Conf. on Hypomagnesaemia, B.V.A., p. 102. London.Google Scholar
Anderson, R. S. & Pickering, E. C. (1962). J. Physiol., Lond. 164, 180.CrossRefGoogle Scholar
Barger, A. C., Berlin, R. D. & Tulenko, J. F. (1958). Endocrinology 62, 804.CrossRefGoogle Scholar
Blaxter, K. L., Cowlishaw, B. & Rook, J. A. F. (1960). Anim. Prod. 2, 1.CrossRefGoogle Scholar
Butler, E. J., Veterinary Investigation and Agricultural Advisory Officers of the East and West of Scotland Agricultural Colleges (1963). J. agric. Sci., Camb. 60, 329.CrossRefGoogle Scholar
Care, A. D. & Ross, D. B. (1963). Res. vet. Sci. 4, 24.CrossRefGoogle Scholar
Daniel, O., Hatfield, E. E., Shrewsberry, W. C., Gibson, M. E. & MacVicar, R. (1952). J. Anim. Sci. 11, 790.Google Scholar
De Groot, T. (1961). Tijdschr. Diergeneesk. 86, 1265.Google Scholar
Denton, D. A. (1957). Q. Jl exp. Physiol. 42, 72.CrossRefGoogle Scholar
Dobson, A., Scott, D. & Bruce, J. B. (1966). Q. Jl exp. Physiol. 51, 311.Google Scholar
Eaton, H. D. & Avampato, J. E. (1952). J. Anim. Sci. 11, 761.Google Scholar
Field, A. C. (1961). Br. J. Nutr. 15, 287.CrossRefGoogle Scholar
Field, A. C. (1964). Br. J. Nutr. 18, 357.CrossRefGoogle Scholar
Forbes, G. B. (1962). In Mineral Metabolism, p. 33. [Comar, C. L. and Bronner, F., editors.] New York: Academic Press Inc.Google Scholar
Hansard, S. L. (1963). Ann. N. Y. Acad. Sci. 110, 229CrossRefGoogle Scholar
Harrison, F. A., Keynes, R. D. & Nauss, A. H. (1964). J. Physiol., Lond. 171, 18P.Google Scholar
Hendriks, H. J. (1962). Some biochemical aspects of hypomagnesaemic tetany. PhD Thesis, University of Utrecht.Google Scholar
Hix, E. L., Evans, L. E. & Underbjerg, G. K. L. (1953). J. Anim. Sci. 12, 459.CrossRefGoogle Scholar
Hvidsten, H., Ødelien, M., Baerug, R. & Tollersrud, S. (1959). Acta agric. scand. 9, 261.CrossRefGoogle Scholar
Kemp, A., Deijs, W. B., Hemkes, O. J. & Van Es, A. J. H. (1961). Neth. J. agric. Sci. 9, 134.Google Scholar
Kunkel, H. O., Burns, K. H. & Camp, B. J. (1953). J. Anim. Sci. 12, 45.Google Scholar
L'Estrange, J. L. & Axford, R. F. E. (1966). J. agric. Sci., Camb. 67, 295.CrossRefGoogle Scholar
Meyer, H. & Steinbeck, H. (1960). Dt. tierärztl. Wschr. 67, 315.Google Scholar
Miller, H. G. (1926). J. biol. Chem. 70, 593.CrossRefGoogle Scholar
Oyaert, W. (1962). Berl. Münch. tierärztl. Wschr. 75, 323.Google Scholar
Pearson, P. B., Gray, J. A. & Reiser, R. (1949). J. Anim. Sci. 8, 52.CrossRefGoogle Scholar
Sellers, A. F. & Dobson, A. (1960). Res. vet. Sci. 1, 95.CrossRefGoogle Scholar
Sellers, A. F., Gitis, T. L. & Roepke, M. H. (1951). Am. J. vet. Res. 12, 292.Google Scholar
Sjollema, B. (1932). Tijdschr. Diergeneesk. 59, 57, 329.Google Scholar
Stewart, J. (1954). Scot. Agric. 34, 68.Google Scholar
Suttle, N. F. & Field, A. C. (1966). Br. J. Nutr. 20, 609.CrossRefGoogle Scholar
Vogel, G. (1959). Pflügers Arch. ges. Physiol. 269, 339.CrossRefGoogle Scholar