Measurements. Feed disappearance and BW were
determined by cage at week intervals and mortality was
recorded and weighed as produced. Feed wastage was
not measured. From these data, ADG, ADFI, and FCR
were determined by week and for the entire experimental
period. In addition, EnI expressed as kcal of
AMEn consumed per day and energy efficiency (EnE),
expressed as kcal of calculated AMEn per g of ADG,
were also estimated for the entire experimental period.
At the end of the experiment (5 wk age) the pullets
were weighed individually and BW uniformity was determined
by replicate as indicated by Peak et al. (2000)