Abstract
The experimental data presented by Evans and Lepkovsky1 in support of the thesis that fat produces a sparing action on vitamin B suggested an attempt to determine whether increasing amounts of fat in the ration would influence the incidence of infant mortality on a maternal diet deficient only in vitamin B or the vitamin B complex. The lactation efficiency index was studied on rations containing 3 levels of fat intake, namely 10, 20, and 30. The fat used was lard. Two types of yeast were used as a source of vitamin B complex for the control diets, i. e. Northwestern dehydrated, and Fleischman's dried.† The same types of yeast, autoclaved, were used as a source of vitamin G for the pathological animals. Of the former 10% was used in the ration and of the latter, 15%. A total of 72 mothers with litters were employed. It was realized that, because of the large amounts of vitamin B required for lactation compared with that for growth, nothing like normal rearing of young could be anticipated by virtue of such...
Published Version
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