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Laboratory of Animal Nutrition, Cornell University, Ithaca, N. Y.
ABSTRACT
In a recent study in this laboratory (1) it was shown that the removal of most of the fat from a ration by benzine extraction of the grain mixture and its replacement by an isodynamic amount of starch resulted in a lowered milk and fat yield, accompanied by a lowering of the fatty acids and cholesterol in the blood plasma.
In view of the results obtained it seemed desirable to study the effect of a more complete removal of the fat, involving the roughage as well as the grain. It also seemed desirable to get more specific proof that it was the fat itself of the benzine extract which was responsible for the changes noted. The question as to whether some specific fat was particularly concerned also arose in view of the work of Burr and Burr (2, 3) showing that certain specific fatty acids are essential for the growth of rats.
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