Studies of the Alleged Growth Promoting Property of Vaccenic Acid

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Abstract
No increase in the growth of young rats on diets containing either corn oil or olive oil resulted from supplementing the diets with vaccenic acid isolated from either butterfat or commercial hydrogenated cottonseed oil. Replacing the sucrose by lactose or starch (rice) as the source of carbohydrate in the diets, or changing the levels of the water soluble vitamins, did not alter the results as far as the vaccenic acid supplementation was concerned. Similar results were obtained when weanling rats from depleted mothers were used. Supplementing a corn oil-lactose diet with either the cis or trans forms of synthetic vaccenic acid produced no growth stimulating effects.