the nitrogen requirement for maintenance of nitrogen equilibrium determined from the regression equation was 118.1 +/- 15.4 mg n/kg/day for spi , 87.1 +/- 17.2 mg n/kg/day for fish protein and 90.5 +/- 17.1 mg n/kg/day for mixed protein .
C0598294
fish protein
C0033684
protein