| abstract |
Disclosed are the use of acyl derivative of aspartic acid of a structure as shown in formula (Ⅰ), or racemate, stereoisomer, geometrical isomer, tautomer, solvate thereof or feed acceptable salt in preparing an animal feed additive, which has a good improvement effect on the production performance of farmed animals, (I), wherein Y and X are independently selected from C 1 -C 20 alkoxy or OH respectively; R 1 is R 1a C(＝O), R 1a S(＝O) 2 or H; R 2 is 2a C(＝O) or R 2a S(＝O) 2 ; and the R 1a and R 2a are independently selected from C 1 -C 20 alkyl or C 3 -C 7 cycloalkyl respectively. |