Studies of the Comparative Nutritive Value of Fats

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Abstract
No differences in the growth of weanling rats were noted at any time over a 12-week period when they were fed minerized skimmed milk powder, vitamin supplements and butter as compared with corn, cottonseed, olive, peanut or soybean oils or margarine. The extent of growth was confirmed at 3 and 6 weeks by x-ray determinations of tibia length. Also, the efficiencies of conversion of these various fats to body tissue were identical. These experiments refute the idea that butter fat possesses certain saturated fatty acids, not present in other fats, which are essential for growth.