Abstract
A total 400 broiler chicks (Ross-308)one day old were randomly for 8 nutritional treatements: percents
of protein (standar and decrease the standar protein level by2%) with for levels of threonine (with out adding
Thr, adding Thr to Complete the requirement, complete the Thr requirement 110% and complete the Thr
requirement 120%. Each treatement included 5 replicates (pens) With bird per each replicate The period of
the exiperment was 42 days. The results of the statistical analyses was refered to the variation amonge the
treatements for the carcass traits , some physical and biochemi cal parameter were significant
(P≤0.05)
Main Subjects
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