INFLUENCE OF THE CALCIUM INTAKE LEVEL UPON THE COMPLETE LIFE CYCLE OF THE ALBINO RAT

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Abstract
Upon 3 diets containing 0.34,0.48, and 0.64% Ca and adequate in all other respects, 48[male] and 72 [female] rats were reared, with equally good growth and reproduction. Thus under favorable conditions the range of optimal Ca intake extended from 0.34-0.64% of the air-dry mixture. The fact that in other expts. with rats of the same colony, but on a less favorable basal diet, a higher Ca intake appeared necessary favors the long-standing hypothesis that Ca in addition to its specific functions may also exert a general regulatory or stabilizing effect.