Abstract
Self-selections of NaCl, NaH2PO4, K2HPO4, calcium-lactate, MgSO4 and ferric-citrate in the albino rats under long term emotional stress elicited by buzzer and shock were discussed.
Aqueous solutions were used for the selection.
NaCl selection was the largest among salts in all groups, and the individual variations were also. But there were no differences among 3 groups as to selections and periodical fluctuations as well as NaH2PO4, MgSO4 and ferric-citrate selections. Selections of K2HPO4 and calciumlactate of Group 3 animals fluctuated markedly during the stress period.
Decrease of K2HPO4 selection during stress reached under 1/3 of selection in the period prior to stress and recovered to 2/3 after the stress.
Increase of calcium-lactate selection during stress reached almost 2. 4 times and recovered rapidly after the stress was removed.
