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The Utilization of the Calcium of Dicalcium Phosphate by Children^{1, 2,}

One Figure

Home Economics Department, College of Agriculture, University of Illinois, Urbana

Six little boys, ranging in age from 3 to 6 years, were fed two levels of calcium, both of which were below the minimal requirement for maximal retention but obviously in excess of a possible maintenance requirement. The lower level contributed, as an average, 350 mg. of calcium daily, the higher one, 500 mg. daily; the difference was due, mainly, to the daily supplementation of the basal dietary with 543 mg. of di-calcium phosphate. The utilization of the calcium averaged 19.5%; individual values were 16.8, 17.9, 23.0, 19.5, 22.6 and 17.3%. These same children had previously served as subjects in a study of the availability of milk calcium and had been able to utilize only 19.8% of that calcium; therefore, it may be concluded that di-calcium phosphate is not superior to milk as a source of calcium for children and that, except for the person who is allergic to milk, there is little virtue in recommending the replacement of milk in the diet by dicalcium phosphate.

² Aided by a grant from the American Dry Milk Institute, Inc., Chicago.

³ A portion of these data was presented by Miss Herta S. Breiter in partial fulfillment of the requirements for the degree of Master of Science at the University of Illinois, June, 1939.

Manuscript received 22 April 1940.