Effect of the probiotics , vitamins A and E on growth performance and some blood parameters in broiler chickens

Abstract

    This study was carried out to know the effect of adding the Iraqi probiotic (Lactobacillus acidophilus , Lactobacilli spp , Bacillus subtilus , Saccharomyces cervisa) , vitamins A and E to diet on some productive features  and blood parameters of Ross broiler, An experiment of 42 days duration was conducted with a flock of 200 chick one day-old , The chicks were distributed randomly into four equal treatments (50) chicks per each treatment with two replicates (25) chicks per each as follow :

T1 : Control group fed on basal diet only .
T2: Fed on basal diet +  probiotic (5 gm/ kg feed) .
T3: Fed on basal diet + vitamin A (12000 IU /kg feed ) + vitamin E (300 mg/kg feed ) .
T4: Fed on basal diet + probiotic (5 gm/ kg feed)  + vitamin A (12000 IU /kg feed ) + vitamin E (300 mg/kg feed ) .

    The results were showed a significant improvement in averages of body weight , weight gain and  feed conversion  efficiency for  the treatments : probiotic , vitamins A and E  and the mixture (probiotic + vitamins A and E) comparative with the control , The  results of weights (carcass , liver and gizzard ) showed significant increased for  treatments of T2 , T3 and T4 comparative with the control , no significant  difference were found among four treatments in weights of the heart , in addition there were no difference among(T2 , T3 and T4 ) in dressing percentage  and mortality , the results showed a calculation  increase  for these treatments  in the dressing percentage and a calculation decrease  in  the mortality percentage comparative with  the control , were for  treatments ( T2 , T3 and T4 )  impact in improving rates of RBC , PCV and Hb    significantly or  calculation comparative with the control , not differ of these three treatments in the rates of RBC and PCV, while  T4  were gave  a significant increase in blood haemoglobin concentration from  T2 and T3 that did not appear significant difference between them .