Changes in the self-selection pattern for purified dietary components by rats after starvation.

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Abstract
The effects of starvation upon the pattern of self-selection by young adult rats of four purified dietary components, casein, fat, sucrose, and salts, were determined. Rats that could self-select satisfactorily (group I) were starved for two days and then placed again on self-selection for a recovery period, after which the procedure was repeated. Rats that could not select satisfactorily were put on a restricted diet consisting mainly of casein and then placed on self-selection. Animals that could afterward select adequately (group II) were starved for two days at the same time as the second starvation of group I. After a two-day starvation, rats showed no avoidance for any particular food component, rather a significant increase in the calories of fat consumed. Even when the dietary experiences of one group up to the time of starvation are quite different from those of another, the groups behave similarly after starvation.

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