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Veterinary Research Communications

, Volume 19, Issue 3, pp 195–203 | Cite as

The concentration of ionized magnesium in serum during the periparturient period of non-paretic dairy cows

  • J. -L. Riond
  • N. Kocabagli
  • U. E. Spichiger
  • M. Wanner
Biochemistry

Abstract

Ion-selective electrodes have recently been designed for determining the ionized concentration of magnesium (Mg2+) in serum. This development may allow new insights into some metabolic diseases of cattle. For this report, the concentrations of Mg2+, total magnesium (Mgtot), ionized calcium (Ca2+), total calcium (Catot), and inorganic phosphate (Pi) were determined in sera from seventeen 3-to 16-year-old Brown Swiss and crossed Simmental/Red Holstein cows during the periparturient period. In each animal, a transient increase of Mg2+ and Mgtot serum concentrations was observed in association with the transient decrease in serum concentrations of Ca2+, Catot and Pi after parturition. On average, throughout the study, the serum Mg2+ concentrations were 68.5% of those of Mgtot, whereas the serum Ca2+ concentrations were 52% of those of Catot. The possible mechanisms involved in the transient increase of Mg2+ and Mgtot serum concentrations are discussed.

Keywords

cow hypocalcaemia inorganic phosphate ionized calcium ionized magnesium parathyroid hormone serum 

Abbreviations

Ca2+

ionized calcium

Catot

total calcium

Mg2+

ionized magnesium

Mgtot

total magnesium

Pi

inorganic phosphate

PTH

parathyroid hormone

PTHrP

parathyroid homrone related protein

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Copyright information

© Kluwer Academic Publishers bv 1995

Authors and Affiliations

  • J. -L. Riond
    • 1
  • N. Kocabagli
    • 1
  • U. E. Spichiger
    • 2
  • M. Wanner
    • 1
  1. 1.Institute of Veterinary Physiology, Division of Animal NutritionUniversity of ZurichZurichSwitzerland
  2. 2.Centre of Chemical Sensors, Biosensors and (Bio-) Analytical Chemistry, Department of PharmacySwiss Federal Institute of TechnologyZurichSwitzerland

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