Hostname: page-component-669899f699-8p65j Total loading time: 0 Render date: 2025-04-25T14:07:43.950Z Has data issue: false hasContentIssue false
  • English
  • Français

Intestinal radiocalcium absorption in the goat: measurement by a double-isotope technique

Published online by Cambridge University Press:  09 March 2007

Knut Hove
Knut Hove
Affiliation:
Department of Animal Nutrition, Agricultural University of Norway, 1432 Ås-NLH, Norway
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. Intestinal radiocalcium absorption was measured in goats by a double-isotope technique involving injection of 45CaCl2 intravenously and 47CaCl2 into the abomasum. Cumulative absorption of radiocalcium was calculated by deconvolution analysis form curves of plasma radioactivity.

2. Repeated measurements at 2 d intervals gave highly reproducible results (r 0.94, P < 0.001). No systematic difference between two consecutive measurements was observed. A good agreement between absorption of radiocalcium from simultaneously administered 47CaCl2 and 45Ca-labelled hay (r 0.93, P < 0.001) seems to justify the use of inorganic 47Ca as a tracer for Ca in ruminant diets.

3. Two- to three-fold increases in radiocalcium absorption 48 h after oral treatment with 1,25- dihydroxycholecalciferol or leaves of Solanum malacoxylon showed the usefulness of the method in situations of rapidly changing Ca absorption.

4. Endogenous adaptations in intestinal radiocalcium absorption from 20 to 43% were observed in lactating goats when Ca intakes decreased from 12 to 4 g/d.

5. It is concluded that the double-isotope technique is a suitable method for studies of Ca absorption in ruminants when tracer is introduced into the abomasum. The test is completed in 3–4 h and may therefore be used in situations where the absorption of Ca undergoes rapid changes.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 51 , Issue 1 , January 1984 , pp. 145 - 156
Copyright
Copyright © The Nutrition Society 1984

References

Abdel-Hafeez, H. M., Manas-Almendros, M., Ross, R., Care, A. D. & Marshall, D. H. (1982). British Journal of Nutrition 47, 69–77.CrossRefGoogle Scholar
Avioli, L. V., McDonald, J. E., Singer, R. A. & Henneman, P. M. (1965). Journal of Clinical Investigation 44, 128–139.CrossRefGoogle Scholar
Braithwaite, G. D. (1975). British Journal of Nutrition 34, 311–324.CrossRefGoogle Scholar
Braithwaite, G. D. (1978). British Journal of Nutrition 39, 213–218.Google Scholar
Braithwaite, G. D., Glascock, R. F. & Raizuddin, Sh. (1969). British Journal of Nutrition 23, 827–834.Google Scholar
Branch, W. J., Southgate, D. A. T. & James, W. P. T. (1975). Proceedings of the Nutrition Society 34, 120 A.Google Scholar
Corradino, R. A. & Wasserman, R. H. (1974). Nature 252, 716–718.Google Scholar
Fox, J. & Care, A. D. (1979). Journal of Endocrinology 82, 417–424.Google Scholar
Fox, J., Care, A. D. & Swaminathan, R. (1978). British Journal of Nutrition 39, 431–439.CrossRefGoogle Scholar
Grace, N. D., Ulyatt, M. J. & MacRae, I. C. (1974). Journal of Agricultural Science 82, 321–330.Google Scholar
Grovum, W. L. & Williams, V. J. (1973). British Journal of Nutrition 29, 13–21.Google Scholar
Hameyer, J., Vogelsang, G. & von Grabe, C. (1976). In Nuclear Techniques in Animal Production and Health, pp. 243–252 [von Grabe, C., editor]. Vienna: International Atomic Energy Commission.Google Scholar
Hart, H. & Spencer, H. (1967). Proceedings of the Society for Experimental Biology 126, 365–371.CrossRefGoogle Scholar
Hove, K. (1984). British Journal of Nutrition 51, 157–164.Google Scholar
Jones, B. & Luthman, J. (1978). Acta Veterinaria Scandinavica 19, 204–214.Google Scholar
Kemp, A., Van't Klooster, A. T., Rogers, P. A. M. & Geurink, J. H. (1973). Netherlands Journal of Agricultural Science 21, 44–55.CrossRefGoogle Scholar
Marshall, D. H. (1976). In Calcium, Phosphate and Magnesium Metabolism, pp. 251–297 [Nordin, B. E. C., editor]. London: Churchill Livingstone.Google Scholar
Mayer, G. P., Ramberg, C. F. Jr. & Kronfeld, D. S. (1967). Journal of Nutrition 92, 253–260.Google Scholar
Norman, A. W., Myrtic, J. F., Midgett, R. J., Nowickz, H. G., Williams, V. & Popjak, G. (1971). Science 173, 51–54.Google Scholar
Omdahl, J. L., Holick, M., Suda, T., Tanaka, Y. & DeLuca, H. F. (1971). Biochemistry 10, 2935–2940.Google Scholar
Phillipson, A. T. & Storry, J. E. (1965). Journal of Physiology 181, 130–150.Google Scholar
Ramberg, C. F. Jr. (1972). In Production Diseases in Farm Animals, pp. 195–200 [Payne, J.M., Hibbit, K. G. and Sansom, B. F., editors]. London: Ballière Tindall.Google Scholar
Ramberg, C. F. Jr., Kronfeld, D.S. & Wilson, G. D. A. (1975). In Digestion and Metabolism in the Ruminant, pp. 231–242. [McDonald, I.W. and Warner, A. C. I., editors]. Armidale, Australia: University of New England Publishing Unit.Google Scholar
Ramberg, C. F. Jr., Mayer, G. P., Kronfeld, D. S., Phang, I. M. & Berman, M. (1970). American Journal of Physiology 219, 1166–1176.CrossRefGoogle Scholar
Storry, J. E. (1961 a). Journal of Agricultural Science 57, 97–102.Google Scholar
Storry, J. E. (1961 b). Journal of Agricultural Science 57, 103–109.Google Scholar
Van't Klooster, A. Th. (1967). Mededelingen Landbouwhogeschool Wageningen, 65–67.Google Scholar
Van't Klooster, A. Th. (1976). Zeitschrift für Tierphysiologie, Tierernährung und Futtermittelkunde 37, 169–182.Google Scholar
Visek, W. J., Barnes, L. L. & Loosli, J. K. (1952). Journal of Dairy Science 35, 783–792.Google Scholar
Visek, W. J., Monroe, R. A., Swanson, E. W. & Comar, C. L. (1953). Journal of Dairy Science 36, 373–384.Google Scholar
Wasserman, R. H. & Taylor, A. N. (1976). In Handbook of Physiology, section 7, vol. VII, pp. 137–155 [Creep, R.O., Astwood, E. B., editors]. Washington, D.C.: American Physiological Society.Google Scholar