Effects of moderate calcium overload on magnesium metabolism in growing pigs receiving normal magnesium intakes.
Mg balance, and bone and plasma Mg contents were assessed in growing pigs fed diets containing either 1.4% or 0.9% calcium and 0.5% total phosphorus (all of plant origin). Mg was provided by the feed ingredients, and both groups received the same level of 0.2%. The high Ca (HCa) diet had no effect upon Mg utilization. Tibial Mg content (of both cortical and medullary bone) was lower and plasma Mg concentration higher in the HCa group. We suggest that these late changes are related to the negative effects of Ca overload upon P metabolism, such as hypophosphataemia, rather than being the result of a direct Mg-Ca interaction.
Pointillart
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INRA, Station de Recherches de Nutrition, Jouy-en-Josas, France.
D000818:Animals; D001011:Aorta / Q000378:metabolism; D001842:Bone and Bones / Q000378:metabolism; D002136:Calcium, Dietary / Q000506:poisoning*; D006128:Growth / Q000502:physiology*; D007668:Kidney / Q000378:metabolism; D008274:Magnesium / Q000008:administration & dosage / Q000378:metabolism*; D008297:Male; D013552:Swine
D002136:Calcium, Dietary; D008274:Magnesium