At 6 wk of age, the birds weighed 2.23 kg,
had a feed conversion efficiency (FCE) of
1.80 and a total mortality of L55%. There
were significant room differences in most
measurements (means not reported due to
confounding of room and photoperiod). The
birds in the continuous light environment
were heavier, had a poorer FCE, had greater
breast meat yield and had higher mortality
than the birds in the light/dark environment.
Room x dietary treatment interactions were
not significant with the exception that FCE
from 3 to 6 wk exhibited a room x methionine
interaction (P