Abstract:
This experiment was conducted to study the effect of different levels of synbiotic on the performance, carcass characteristics, serum attributes and economical appraisal of broiler chicks . Atotal of one hundred and five , seven days old, unsexed Arbor Acers strain were used. Chicks were divided into five experimental (A,B,C,D and E) dietary diets, each treatment was further subdivided into five replicates in a complete randomized design .The first group (A) fed on control diet as negative control diet, group (B) fed on control diet supplemented with (0.5mg /kg ) klavamycin as positive control diet, groups C,D and E were fed on negative control diet supplemented with 0.5mg/kg , 1mg/kg and 2mg/kg symbiotic respectively .Experimental diets were fed for five weeks .
Results obtained showed that supplementing of broiler diets with synbiotic recorded significantly (P<0.05) heavy body weight, weight gain and more feed consumption while no significant (P>0.05) effect in FCR compared to both NC and PC was observed.
Result also showed no significant differences for non carcass components, commercial cuts and their meat/bone ratio components among the various treatment groups.
Result obtained for meat chemical attributes revealed a significant (P<0.05) increase in the values of protein , fat , total solids , T.N.F and acidity for chicks fed on diet supplemented with synbiotic compared with both NC and PC groups, while biochemical serum values showed no significant difference between tested treatment groups
The result of economical evaluation of experimental diets showed that the addition of synbiotic at various levels to the diet of broiler caused more profit compared to NC groups.
The result of this study showed that synbiotic can be used as a good alternative to antibiotic in broiler diets as growth promoter without any adverse effects.
