The Effect of a High Magnesium Intake on Calcium Retention by Swine.’
نویسندگان
چکیده
The experiment to be described in this paper relates to the influence which the addition of magnesium salts and of magnesium salts plus phosphates to the diet may exert upon calcium metabolism. They may also be interpreted as throwing some light upon the general problem of the mutual relationships which exist among the mineral constituents of the diet, considered from the standpoint of animal nutrition. Many experiments are on record which indicate the existence of important biological relationships between calcium and magnesium. For example, Loew2 showed that magnesium could serve in the nutrition of plants only in the presence of calcium salts. Loeb3 found the contractile reaction in jellyfish induced by mag‘nesium to be inhibited by calcium. Meltzer and Auer4 proved that the effects of calcium on muscle and nerve in rabbits could be reversed by the injection of magnesium salts. In dogs, Mendel and Benedict5 observed that ‘the injection of calcium salts was’ followed by increased elimination of magnesium in the urine: similarly injection of a magnesium salt increased the urinary output of calcium. Malcolm6 published evidence tending to show.
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