The feed intake was determined by weighing the bucket
and feed before and after consumption before the next
refilling of the bucket. Egg production was monitored on
daily basis and recorded for each replicate. The eggs
were stored separately in well marked plastic containers
corresponding to each group. The eggs from each
treatment group were weighed at two-day intervals to
determine the weight. One egg from each replicate was
randomly selected and broken to determine the egg yolk
colour score on a two day interval. This was done using
a Roche colour fan and a score ranging from one to
fifteen (yellow-orange) given individually by four readers
then an average score for each treatment group
determined.