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Effect of Probiotic Supplementation in Broiler Birds Offered Feed Formulated with Lower Protein Densities

Shivani Katoch Sidharath Dev Rajesh Rajput
Vol 7(2), 90-102

Comparative dietary response of a combination of the different isolated bacterial strains of Lactobacilli and Streptococci isolated from leopard feces (Panthera leo) and locally procured bakery yeast Saccharomyces cerevisiae were studied as direct fed microbial (DFM) in poultry broiler birds reared on low density protein test diet under complete randomized design. For this purpose, day old broiler chicks (n=120) were divided into 3 main groups T0, T1 and T2, each group was further divided in 2 sub-groups or replicates with 20 chicks in each. Group T0 was given standard ration and served as control group. Further group T1 was given ration containing low density protein which served as negative control group and group T2 was given ration containing low density protein supplemented with direct fed microbial. The ration fed to group T1 and T2 was formulated in a way that the crude protein was 10 per cent lower than the ration fed to control group T0 but the energy content was same. Results of the experiment revealed P<0.05) higher gain in live weight and feed conversion in control group T0 fed standard diet compared to negative control group T1 and treatment group T2 fed crude protein deficient ration in both starter and finisher phase whereas treatment group T2 exhibited numerically higher gain in live weight during finisher phase compared to negative control group T1. Feed conversion ratio was (P<0.05) better in treatment group T2 fed DFM then its negative control group T1 during finisher phase which also reflected in the overall feed conversion ratio. Treatment group T2 exhibited better intestinal micro flora balance, effective colonization and higher count in the intestinal tract, lowered (P<0.05) blood cholesterol with higher (P<0.05) nitrogen retention in the digestibility studies. Thus, it was found that supplementation of isolated DFM has the potential to support growth performance of poultry broiler birds offered low density protein diet.

Keywords : Probiotic Direct-Fed-Microbial Chicken- Broiler Feed Protein Density

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