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Division of Poultry Husbandry, College of Agriculture, University of California, Berkeley
Addition of both cholesterol and cottonseed oil to a diet containing 20% alfalfa meal completely prevented the growth depression otherwise produced in chicks on such a diet. An identical effect was obtained with cottonseed oil and a phytosterol mixture prepared from soybeans.
The growth depression produced by Quillaja saponin in the chick diet was also prevented by the addition of a mixture of cottonseed oil and cholesterol to the diet.
Raising the chicks' blood level of cholesterol by treatment with diethylstilbestrol was ineffective as a means of preventing the growth depression brought about by a high level of alfalfa meal in the diet. Counteraction of the alfalfa growth inhibitor or inhibitors was not dependent upon an increase in the plasma level of sterols determinable by the Liebermann-Burchard reaction.
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