339.

Harmon BG, Becker DE, Jensen AH, Norton HW. Effect of di-Na EDTA in diets of different iron levels on utilization of calcium, phosphorus, and iron by rats. J Anim. Sci. 1968; 27(2):418-423. (CA69) [Levels of Fe up to 4510 ppm. were studied. The higher Fe levels reduced gain; gain-feed ratio; bone ash, Ca, and P; and serum Ca, but increased serum P and liver Fe. As dietary Fe increased urinary P and percent Fe retained were reduced while urinary Ca and Fe and fecal P and Fe increased. The addn. of di-Na EDTA increased wt. gain and bone ash in diets contg. high Fe levels when Ca was fed at 1.02% of the diet. There was little effect of Di-Na EDTA when dietary Ca was reduced to 0.59%. When di-Na EDTA was added, excretion of fecal P and ash was reduced and the absorption and retention of P were increased.]

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