Nonruminant Nutrition: Poultry Nutrition - Breeder and Laying Hen Nutrition and Broiler Environment

1 in southern Japan, Bs was added to all broiler feeds (0 or 3x105 CFU/g), and excreta collected at 2 ages. At 14 d, in the Bs ock Lac increased (P<0.05) and Salmonella were not detected vs 4.97 Log10 CFU/g excreta in the negative control ock. At 49 d, Clostridium perfringens (3.22 vs 2.66 Log10 CFU/g excreta; P<0.05) and Salmonella (4.07 vs 3.31 Log10 CFU/g excreta, P<0.01; 20/20 vs 10/20, P<0.05) were reduced in the Bs ock. Two trials were conducted at a US broiler company to compare Bs fed ocks vs previous antibiotic growth promoter (AGP; for necrotic enteritis prevention) fed ocks. Excreta was collected at 35 d. In Exp. 2, Lac (P<0.001) and Lac/TA% (22.9% vs 52.2%; P<0.05) were higher and Enterobacteriaceae (coliforms) lower (P<0.01) in Bs birds. Livability was higher and farm condemnations lower in 7 Bs ocks vs 4 previous AGP ocks (P<0.01), and caloric conversion was lower in 7 Bs ocks vs 902 simultaneous ocks (P=0.014). In Exp. 3a, Lac (P<0.001) and Lac/TA% (21.2 vs 58.5%; P<0.01) were higher in Bs birds. In Exp. 3b (same control as Exp. 3a), Lac (P<0.001) and Lac/TA% (21.2% vs 54.8 and 59.5%; P<0.001) were higher and Clostridium perfringens lower (P<0.05) in Bs birds. The Bs C-3102 ocks had higher intestinal (excreta) Lac or Lac/TA%, lower pathogen counts, and/or improved performance, compared to simultaneous (or previous) negative control or AGP ocks.