Phosphorus utilization
was significantly higher for the NC diet (
P
<
0.0001).
Phytase alone and in combination with 0.5% FOS in-
creased P utilization significantly when compared with
other treatments (
P
<
0.05). Fructooligosaccharides, es-
pecially at the level of 0.5%, increased P retentionIn
conclusion, phytase supplementation in low Ca and P
diets improved growth performance, bone quality, and
P utilization. However, supplementing NC diets with
phytase and FOS did not result in bone mineralization
values comparable with that of the PC diet. The ap-
plication of dietary FOS alone had a negative effect on
broiler bone quality.