Bioevaluation of Dietary Iron in Growing Rats. I. Relationship between the Iron Level in a Milk Powder Diet and the Response of Growing Rats

Bioevaluation of Dietary Iron in Growing Rats. II. Relationship between the Iron Level in a Semolina Diet and the Response of Growing Rats

“…The pattern of the food efficiency figures in relation to the iron concentration indicated a similarity with th at obtained with the milk diet [1], the maximum of the efficiency being at 29 mg Fe/kg in both cases.…”

“…The highest iron concentration (80 mg/kg) might have had a slight adverse effect on the growth. The comparison of these results with those of the previous study [1] indicated th at in the semolina diet the iron concentration th at produced the maximal growth rate of the rat was somewhat higher than th at in the milk diet.…”

“…This level was 4 mg/kg higher than the iron level in the dried skim milk diet [1]. Despite the ele vated iron concentration the basal semolina diet was effective in producing anemia in growing rats although the symptoms were less severe than those produced by the hasal milk diet.…”

“…In order to reduce the apparent adverse effect of the re latively high am ount of lactose of the basal diet used previously by us [1], the major [»art of the skim milk powder was replaced by semolina (ash content about 0.5%) and casein. This diet contained by calculation 16% protein, 14% fat, 56% carbohydrate and 1% ash and its energy content was 4.2 kcal/g.…”

“…In the previous paper of this series [1] response patterns of growing rats to different levels of iron in a spray-dried skim milk diet were described. The range of iron adm inistration levels was so expanded that the reactions of iron deficiency, iron optimum, and iron excess could be evaluated.…”