RELATIVE NUTRITIVE VALUES OF ANIMAL AND VEGETABLE FATS

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Abstract
Differences in m. p., provided the m. p. is not too high to prevent liquefaction at body temp., are of no practical nutritional significance. Edible fats differ with respect to their value as sources of vit. A, D, E and K, or their precursors. Natural fats differ in their content of the essential tmsaturated fatty acids but the amts. needed are so small that these differences are probably of no practical nutritional significance. Natural fats have not been found to differ appreciably in their effects on the body''s needs for other dietary essentials. The conflicting evidence with respect to the value of various fats for growth when associated with various carbohydrates is reviewed. The lack of fat per se results in lowered milk production by the lactating animal; lactation may not be as good with hydrogenated cocoanut oil as with natural cocoanut oil; this difference is not obviated by supplying essential fatty acid. Expts. with 8 and more successive generations of rats have shown that a vegetable fat such as that contained in a margarine can serve adequately in place of butter fat for growth and reproduction.
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