Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-03T05:13:29.241Z Has data issue: false hasContentIssue false
  • English
  • Français

Endogenous faecal loss of calcium by ruminants

Published online by Cambridge University Press:  27 March 2009

G. D. Braithwaite
G. D. Braithwaite
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading, Berks, RO2 9AT
Get access Rights & Permissions [Opens in a new window]

Summary

A re-examination of the results from 374 sheep used in previovis studies of calcium metabolism show there is a highly significant linear relationship between endogenous faecal loss of Oa and food intake, endogenous loss increasing by about 0·64 mg/day/kg body weight for each 1 g/day/kg body weight increase in food intake. This loss was unaltered by Ca intake or by pregnancy and lactation but was slightly higher in young animals than in adult animals given the same Ca intake on a body-weight basis. It is suggested that a variable factor for endogenous Ca loss, based upon some measure of level of feeding, should be introduced into rationing schemes.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 99 , Issue 2 , October 1982 , pp. 355 - 358
Copyright
Copyright © Cambridge University Press 1982

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Agricultural Research Council (1965). The Nutrient Requirements of Farm Livestock, no. 2, Ruminants, London: H.M.S.O.Google Scholar
Agricultural Research Council (1980). The Nutrient requirements of Ruminant Livestock. Slough: Commonwealth Agricultural Bureau.Google Scholar
Aubert, J.-P. & Milhaud, G. (1960). Méthode de mesure des principles voies du métabolisme calcique cliez l'homme. Biochimica et Biophysica Acta 39, 122–139.Google Scholar
Braithwaite, G. D. (1972). The effect of ammonium chloride on calcium metabolism in sheep. British Journal of Nutrition 27, 201–209.Google Scholar
Braithwaite, G. D. (1974). The effect of changes of dietary calcium concentration on calcium metabolism in sheep. British Journal of Nutrition 31, 319–331.Google Scholar
Braithwaite, G. D. (1975 a). The effect of growth hormone on calcium metabolism in the sheep. British Journal of Nutrition 33, 309–314.CrossRefGoogle ScholarPubMed
Braithwaite, G. D. (1975 b). Studies on the absorption and retention of calcium and phosphorus by young and mature Ca-deficient sheep. British Journal of Nutrition 34, 311–324.Google Scholar
Braithwaite, G. D. (1978 a). The effect of dietary calcium intake of ewes in pregnancy on their Ca and phosphorus metabolism in lactation. British Journal of Nutrition 39, 213–218.Google Scholar
Braithwaite, G. D. (1978 b). Adaptations in the calcium and phosphorus metabolism of sheep in response to an intravenous infusion of Ca. British Journal of Nutrition 40, 17–21.CrossRefGoogle Scholar
Braithwaite, G. D. (1978 c). The effect of 1-α-hydroxycholeealciferol on calcium and phosphorus metabolism in the laetating ewe. British Journal of Nutrition 40, 387–392.CrossRefGoogle ScholarPubMed
Braithwaite, G. D. (1978 d). The effect of dietary protein intake on calcium metabolism of the pregnant ewe. British Journal of Nutrition 40, 505–507.CrossRefGoogle ScholarPubMed
Braithwaite, G. D. (1979). The effect of dietary intake of calcium and phosphorus on their absorption and retention by mature Ca-replete sheep. Journal of Agricultural Science, Cambridge 92, 337–342.Google Scholar
Braithwaite, G. D. (1980). The effect of dose rate of 1-α-hydroxycholecalciferol on calcium and phosphorus metabolism in sheep. British Journal of Nutrition 44, 183–191.CrossRefGoogle ScholarPubMed
Braithwaite, G. D. (1981). Effect of 1-α-hydroxycholecalciferol on calcium and phosphorus metabolism in sheep given high or low calcium diets. Journal of Agricultural Science, Cambridge 96, 291–299.Google Scholar
Braithwaite, G. D. & Glascock, R. F. (1976). Metabolism of calcium in the sheep. Biennial Reviews, National Institute for Research in Dairying, pp. 43–59.Google Scholar
Braithwaite, G. D., Glascock, R. F. & Riazuddin, Sh. (1969). Calcium metabolism in lactating ewes. British Journal of Nutrition 23, 827–834.Google Scholar
Braithwaite, G. D., Glascock, R. F. & Riazuddin, Sh. (1970). Calcium metabolism in pregnant ewes. British Journal of Nutrition 24, 661–670.Google Scholar
Braithwaite, G. D., Glascock, R. F. & Riazuddin, Sh. (1972). The effect of hexoestrol on calcium metabolism in the sheep. British Journal of Nutrition 28, 269–273.CrossRefGoogle ScholarPubMed
Braithwaite, G. D. & Riazuddin, Sh. (1971). The effect of age and level of dietary calcium intake on calcium metabolism in sheep. British Journal of Nutrition 26, 215–225.CrossRefGoogle ScholarPubMed
Nel, J. W. & More, R. J. (1974). The effect of ruminal and duodenal application of different levels of calcium and phosphorus to sheep on semi-purified diets. South African Journal of Animal Science 4, 1–20.Google Scholar
Ramberg, C. F. Jr, Mayer, G. P., Krcnfeld, D. S., Phang, J. M. & Berman, M. (1970). Calcium kinetics in cows during late pregnancy, parturition and early lactation. American Journal of Physiology 219, 1166–1177.Google Scholar
Schroder, J. D. & Hansard, S. L. (1958). Effect of orally administered stilboestrol upon growth and upon calcium and phosphorus metabolism in lambs. Journal of Animal Science 17, 343–352.CrossRefGoogle Scholar
Visek, W. J., Monroe, R. A., Swanson, E. W. & Comar, C. L. (1953). Determination of endogenous faecal calcium in cattle by a simple isotope dilution method. Journal of Nutrition 50, 23–33.CrossRefGoogle ScholarPubMed