Relative gizzard weight was also significantly greater in D+ than in D- at 7 and 21 d (P
= 0.07 at 53 d) but lighter (P < 0.05) in RL compared
with D- at 7 d of age. Relative intestinal segment
weights were similar in D+ and RL birds at 7 and 53 d,
except for DW at 7 d, but D+ had a 23.3% and 23.2%
lighter(P < 0.05) jejunum and ileum, respectively, than
RL birds at 21 d. Furthermore, D+ birds had less dense
(P < 0.05) intestines than RL birds whatever the age,
with differences ranging from 15.9% to 34.5%. D+ also
had 12.0% to 30.8% lighter and 16.7% to 25.0% less
dense intestines than D- birds at 21 and 53 d. Finally,
intestinal weights of D- and RL birds did not differ from