The BW responses
in Figure 3 are still increasing, similar to the BW
responses in Figure 1 (between 100 and 110%
of manual recommendations). Similarly, the FE
responses in Figure 4 are increasing, similar to
the FE responses in Figure 1 (between 90 and
100% of manual recommendations). The overall
conclusion from the data set compiled by Payne
[15] should be that both amino acid supplementation
and CP levels are important in determining
growth responses of broilers