Al-Qadisiyah Journal For Agriculture Sciences,
2011, Volume 1, Issue 1, Pages 112-121
This study was carried out in commercial chicken farm during a
period November 12th 2007 to January 7th 2008. to evaluate the effect of
using antibiotic (oxytetracyclin) at level (5.5mg/kg feed) and Iraqi probiotic
at level (5g/kg feed) and their combination on some biochemical and
immunological parameters for broiler chicks. A total of two hundred and
fourty, one day old un sexed broiler chicks were used in this study. These
chicks were distributed randomly into four treatment groups. (60 chicks
per each) with two replicates for each treatment (30 chicks per each).
1- Control group :fed on basal diet free from any addition.
2- Antibiotic group: fed on the same diet supplemented with 5.5 mg
3- Probiotic group :fed on the same basal diet supplemented with 5g
4- Combination group: fed on the same basal diet supplemented with
5.5mg (oxytetracycline) plus 5g probiotic /kg feed.
The biochemical parameters includes total protein, cholesterol,
calcium, phosphorus and alkaline phosphatase in blood serum and ash
percentage in bones while the immunological parameters includes the
relative weight of bursa fabricia, index of bursa fabricia and
The results of this study showed that superior the probiotic group in
most biochemical parameters for serum and bone, and decrease in
cholesterol concentration as compared with the other treatment groups.
While the probiotic group revealed significant improvement in relative
weight and index of bursa fabricia and decrease in H/L.
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