Influence of a dried Bacillus subtilis culture on intestinal microflora and performance of broilers and turkeys.

摘要

wo experiments, each involving a 3 x 2 factorial design, were conducted with Large White turkeys to determine the influence of a Bacillus subtilis culture on body weight gain (BWG), feed efficiency (FE), livability and intestinal microflora. Four experiments with broiler chickens were also conducted to evaluate the protein-sparing effect of the B. subtilis culture when fed with different levels and sources of protein. The protease activity of the culture was hypothesized to improve protein digestibility. In the first experiment with female turkeys, the culture increased (P