Hostname: page-component-77c89778f8-rkxrd Total loading time: 0 Render date: 2024-07-17T00:09:27.605Z Has data issue: false hasContentIssue false
  • English
  • Français

Calcium metabolism of cows at parturition and during milk production

Published online by Cambridge University Press:  27 March 2009

B. F. Sansom
B. F. Sansom
Affiliation:
Department of Functional Pathology, Institute for Research on Animal Diseases, Compton, Nr. Newbury, Berks.
Get access Rights & Permissions [Opens in a new window]

Summary

Calcium metabolism in dairy cows has been studied at three periods, namely 2 weeks before and 2 weeks after parturition, and also at peak lactation. Of the four parameters studied—percentage absorption from the diet, endogenous excretion, exchangeable pool size and bone accretion rate—only the last showed significant changes, falling at parturition and rising to pre-calving levels subsequently. There was no increase in the percentage absorption of calcium from the diet after calving but total calcium absorption rose because of increased dietary intake.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 72 , Issue 3 , June 1969 , pp. 455 - 458
Copyright
Copyright © Cambridge University Press 1969

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

REFERENCES

Balch, C. C., Bartlett, S. & Johnson, V. W. (1951). Apparatus for separate collection of faeces and urine from cows. J. agric. Sci., Camb. 41, 98–101.CrossRefGoogle Scholar
Bauer, G. C. H., Carlsson, A. & Lindquist, B (1955). Evaluation of accretion, resorption and exchange reactions in the skeleton. K. fysiogr. Sällsk. Lund Förh. 25 (1), 3–18.Google Scholar
Garner, R. J., Jones, H. G. & Sansom, B. F. (1960). Some aspects of the metabolism of the alkaline earth elements calcium, strontium and barium. Biochem. J. 76, 572–9.CrossRefGoogle Scholar
Hansard, S. L., Comar, C. L. & Davis, G. K. (1954). Effects of age on physiological behaviour of calcium in cattle. Am. J. Physiol. 177, 383–9.CrossRefGoogle ScholarPubMed
Hansard, S. L., Comar, C. L. & Plumlee, M. P. (1954). The effects of age upon calcium utilization and maintenance requirements in the bovine. J. Anim. Sci. 13, 25–36.CrossRefGoogle Scholar
Hansard, S. L., Crowder, H. M. & Lyke, W. A. (1957). Biological availability of calcium in feeds for cattle. J. Anim. Sci. 16, 437–43.CrossRefGoogle Scholar
Manston, R. & Payne, J. M. (1964). Mineral imbalance in pregnant ‘milk-fever-prone’ cows and the value and possible toxic effects of treatment with vitamin D3 and dihydrotachysterol. Br. vet. J., 120, 167–77.CrossRefGoogle Scholar
Symonds, H., Manston, R., Payne, J. M. & Sansom, B. F. (1966). Changes in the calcium and phosphorus requirements of the dairy cow at parturition with particular reference to the amounts supplied to the foetus in utero. Brit. vet. J. 122, 196–200.CrossRefGoogle Scholar
Ward, G. M. & Adams, M. F. (1951). Daily faecal excretion of calcium, sodium and potassium, and faecal pH of eleven dairy cows at parturition. J. Dairy Sci. 34, 507.Google Scholar
Ward, G. M. & Blosser, T. H. (1952). The relation of pre-partal and post-partal mineral balances to the occurrence of parturient paresis in dairy cows. J. Dairy Sci. 35, 587–94.CrossRefGoogle Scholar
Wills, M. R. & Gray, B. C. (1964). Micro-method for the estimation of calcium by Autoanalyser. J. din. Path. 17, 687–9.CrossRefGoogle Scholar