In the small intestinal digesta, the viable counts of Bifidobacterium and Lactobacillus were significantly in creased,whereas those of Escherichia coli were significantly reduced for the broilers fed diets with 4.0 g/kg FOS versus control (Table 3). Similarly, in cecal digesta, the viable counts of total anaerobes and Bifidobacterium were significantly increased for the birds fed diets with 4.0 g/kg FOS, and those of Lactobacillus were significantly increased, whereas those of E. coli were significantly reduced for the birds fed with 2.0 and 4.0 g/kg FOS versus control.