تأثير المعزز الحيوي probiotics مع فيتامين A و E على أداء النمو و بعض معايير الدم في فروج اللحم

الملخص EN

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.