Vol. 10, Special Issue 12 (2021)

Author(s):
Kailash Madne, Vijaya Lakshmi K, Srilatha T, Prakash B and Keerthana T

Abstract:
Three hundred and fifty day old commercial broiler chicks were randomly allotted to 7 treatments with 10 replicates containing 5 chicks in each replicate. The treatments consist of corn-soya and fish meal-based control diet, Control diet supplemented with antibiotic (Bacitracin methylene disalicylate, @ 500g/ton) and probiotic at 100, 200, 400, 600 & 800 g/ ton diet. Fish meal (4%) was included in the diets as microbial challenge so as to assess the efficacy of the probiotic supplement. The total cholesterol concentration (mg/dl) in groups given graded levels of probiotic was significantly (P<0.05) lower in comparison to control and antibiotic groups. The total protein concentration (g/dl) was higher in groups fed diet supplemented (200g/ton, 400g/ton) to control group. The albumin concentration (g/dl) of antibiotic group was significantly (P<0.05) higher. The globulin concentration (g/dl) value of probiotic group (400g/ton) was significantly (P<0.05) increased. The humoral immune response to ND vaccine, the percent bursal, thymus and spleen weights were statistically similar among the treatments. Escherichia coli count was significantly (P<0.05) reduced in birds fed graded levels of probiotic. It can be concluded that probiotic at 400 g/ton may be supplemented which effectively improved total protein, globulin decreased cholesterol and reduced E coli count when compared to control and comparable to antibiotic but did not influence immune response.