Application of Probiotic (Bacillus subtilis) to Enhance Immunity, Antioxidation, Digestive Enzymes Activity and Hematological Profile of Shaoxing Duck

The study was designed to evaluate the effects of probiotics (Bacillus subtilis) to enhance immunity, antioxidation, digestive enzymes activity and hematological profile of Shaoxing duck. A population of 200 laying ducks (160 days old) was divided into two groups each further divided in five replications. The control (G1) were fed on basal diet and (G2) with B. subtilis 1×108 cfu/kg in addition of basal diet for thirty five days. The results showed that, ducks were treated with probiotics (B. subtilis), their serum IL-2 increased and IL-10 decreased (P