Effect of Type of Dietary Fat on Plasma and Liver Cholesterol Concentration in Female Chicks

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Abstract
Female chicks were fed a basal diet supplemented with 0.5% of cholesterol and 3% of fat or oil. The addition of 3% of fat or oil to the diet without cholesterol supplementation did not increase plasma or liver cholesterol concentration. When 0.5% of cholesterol was added to the diet, the type of oil fed had a definite effect on plasma and liver cholesterol concentration. There was no significant difference in the plasma cholesterol level of groups receiving the cholesterol supplement and fed either lard or vegetable oil. These groups, fed either lard or vegetable oils, had significantly higher plasma cholesterol levels than any of the groups fed fish oil. Although adding fish oils to the diet of cholesterol-fed chicks resulted in lower plasma cholesterol levels than when other oils were fed, only the groups fed redfish oil had a significantly lower liver cholesterol concentration. No significant reduction in plasma or liver cholesterol resulted from adding vanadium to the diet. Both feed consumption and rate of growth were decreased by the addition of 50 ppm of vanadium to the diet.