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Vitamin D Status and Hypocalcemic Response to Protamine in Exercised and Non-exercised Dairy Cows

Acta Veterinaria Scandinavica volume 34, pages 53–57 (1993)Cite this article

Abstract

Bone resorption was studied in post parturient cows using intravenous injection of protamine. Protamine inhibits bone resorption and the protamine-induced hypocalcemia can be taken as a measure of this process. The studies were performed in a herd where half of the cows had been tied indoors for 21/2 years, the other half had been given daily exercise during the same period. All animals were fed in the same way.

The hypocalcémie response to protamine was the same in both groups, which indicates that exercise did not change bone resorption.

The serum levels of calcium, inorganic phosphorus and magnesium around parturition did not differ. The daily exposure to daylight increased the serum level of 25-(OH)-chole-calciferol in late summer in the exercised group.

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Authors and Affiliations

  1. Department of Cattle and Sheep Diseases, Swedish University of Agricultural Sciences, Box 7019, S-750 07, Uppsala, Sweden

    J. Luthman & C. Korpe

Authors
  1. J. Luthman
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  2. C. Korpe
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Luthman, J., Korpe, C. Vitamin D Status and Hypocalcemic Response to Protamine in Exercised and Non-exercised Dairy Cows. Acta Vet Scand 34, 53–57 (1993). https://doi.org/10.1186/BF03548223

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  • DOI: https://doi.org/10.1186/BF03548223

Keywords

  • calcium

Acta Veterinaria Scandinavica

ISSN: 1751-0147