The 200 lx birds were more active (P =
0.03) and fed more (P = 0.001) during the photophase
but were less active (P = 0.02) and fed less (P < 0.001)
during the scotophase, than the 1 lx birds. There were
no differences in G:F (mean ± SEM, 1.63 ± 0.01 kg
of feed/kg of BW).