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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.
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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

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References

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