| abstract |
PROBLEM TO BE SOLVED: To provide a feed that fish can save protein. [MEANS FOR SOLVING PROBLEMS] Fish oil, corn oil, and a compound represented by the following chemical structural formula (wherein R 1 represents a hydroxy group, R 2 represents a hydroxy group, a methoxy group or an alkoxy group, and R 3 represents a triterpene) Add the salts. [Selection figure] None |