Similar to the BW results, the level of trypsin inhibitors
units in the ESBM produced a quadratic effect on
FCR at 14 d of age. Chicks fed diets that contained
ESBM with 12.6 and 16.2 TIU/mg exhibited the best
FCR. Chicks fed diets that contained ESBM with TIU
lower than 9.6 TIU/mg had poorer FCR. Aburto et
al. (1998) reported that birds fed overheated SBM exhibited
significantly reduced BW and poorer feed efficiency
when compared with properly heated SBM,
but the addition of 0.08% crystalline lysine restored
performance. In general, the growth of the chicks in all
the treatments was quite good likely because diets were
formulated on a digestible amino acid basis.