intensity had no effect on expressi

intensity had no effect on expression of feeding and drinking
behaviours, which is in agreement with a previous
study (Newberry et al., 1988). Similarly, Alvino et al. (2009)
did not find a difference in feeding behaviour due to light
intensity but found that birds exposed to a light intensity
of 5 lx spent more time drinking in contrast with those
exposed to 200 lx over the 24 h photoperiod. However,
it is noteworthy that no difference was seen during the
16 h light period. The presence of drinking during the dark
period may relate to the use of 1 lx intensity and therefore
lack of a clear day night difference for the 5 lx treatment.
No difference in feeding behaviour is not surprising based
on the lack of a light intensity effect on broiler production
(Deep et al., 2010), and the high motivation for feeding in
growth-oriented broilers