For the investigation of the roles of biotechnical microorganism forage additives

Bs964

a biotechnical microorganism cloned with α amylase gene and so capable of α amylase secretion

and being K r m

was used as a forage additive for chicken in this study. The experiment chickens at different age were fed with the forage additive

and the means of daily mass gain have been measured.The results showed that Bs964 promote for chicken growth. The effects of different forage additive feeding time on the chicken growth have been analyzed in the paper.