Effect of graded levels of Yebaton on the performance and immune responses in commercial broiler birds

A growth trial was conducted to study the effects of graded levels of Yebaton (0, 50, and 100 g/ton) on the performance traits, slaughter variables and immune response of commercial broiler (Vencobb) birds from 0 to 42 days of age. A total 150 birds were allotted randomly to 30 battery brooder cells and fed with T1 (control diet, Yebaton was not supplemented to the diet), T2 (50 g/ton of Yebaton) and T3 (100 g/ton Yebaton) diets. The birds are reared under uniform managemental conditions and each diet was fed adlibitum to 10 replicates consisting of 5 birds per replicate. The stastical analysis of the data revealed no significant (P>0.05) difference in body weight gain, feed consumption and feed conversion ratio among the birds fed experimental diets. However, the slaughter parameters like relative weights of ready to cooked yield (74.46%), breast weight(18.98%), were found to be higher in T3 based diet group. The immune organs weight, spleen (0.289%), bursal yield (0.249%), intestinal length (10.37 cm/100g) and caecal length (1.59cm/100g) were also observed to be higher in T3 based diet group compared to T1 and T2 based dietary groups. The supplementation of Yebaton did not influence the antibody production of ND vaccination.