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Journal of Dairy Science Vol. 60 No. 6 935-941
© 1977 by American Dairy Science Association ®
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Fetal and Maternal Mineral Concentrations in Dairy Cattle During Late Pregnancy

G. D. A. Wilson, J. T. Hunter, G. H. Derrick, W. M. Aitken and D. S. Kronfeld1

Ministry of Agriculture and Fisheries, Ruakura Animal Research Station, Private Bag, Hamilton, New Zealand

ABSTRACT

Concentrations of ionic and total calcium, magnesium, and inorganic phosphorus in plasma were determined in bovine fetuses and their mothers within the last month before delivery. Mean fetal concentrations were higher than corresponding maternal contents during the 22 days before delivery. Ionic and total calcium in plasma fell towards term in mother and fetus. Fetal phosphorus was elevated before parturition while maternal phosphorus fell. Maternal magnesium was elevated slightly at parturition.

FOOTNOTES

1 Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Kennett Square 19348.






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Copyright © 1977 by the American Dairy Science Association ®.