The Dynamics of Probiotics on Growth Performance and Immune Response in Broilers

Abstract

The research work was conducted on Hubbard Isa Starbro broilers to evaluate the dynamics of probiotics relating to live weight gain, carcass yield, weight of cut up meat parts and immune response. Day old broiler chicks were divided into four groups as group A (Vaccinated probiotics fed group), B (Nonvaccinated probiotics fed group), C (Vaccinated conventional fed group) and D (Nonvaccinate d conventional fed group). Groups C and D were taken as control birds fed with commercial ration and groups A and B as experimental birds were fed with commercial ration with the addition of 2gm probiotics (Protexin ® of age. A significantly (p<0.01) higher breast weight in broiler chicks fed with the probiotics was observed on the 4 and 6 week of age. Analogously a significantly (p<0.05) higher breast portion weight was found in th th experimental birds as compared to control ones during 2 week of age. (c) The antibody production was nd found significantly (p<0.01) higher in experimental birds as compared to control ones. Significant differences were also observed in the weight of spleen and bursa due to probiotics supplementation. The results of the study thus revealed that probiotics supplementation promoted significant influence on live weight gain, high carcass yield, prominent cut up meat parts and immune response.