Abstract
The admn. of 0.5 g. of choline daily for 4-10 wks. to hens fed Purina laying mash had little or no effect of the N. P. N., urea N, glucose, or serum protein levels. However, the blood cholesterol, total and ester, was reduced and the organic P values slightly increased. The levels of these substances in the aorta, heart muscle, and liver were likewise changed. Cholesterol seemingly is mobilized from the blood and tissues of hens and metabolized urder the influence of choline admn.

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