Modulation of cytokine gene expression by selectedLactobacillusisolates in the ileum, caecal tonsils and spleen ofSalmonella-challenged broilers

Probiotics have been used to control Salmonella colonization in the chicken intestine. Recently, we demonstrated that certain selected Lactobacillus isolates were able to reduce Salmonella infection in the chicken spleen and liver as well as down-regulated Salmonella pathogenicity island 1 virulence gene expression in the chicken caecum. To further understand the mechanisms through which Lactobacillus protected chickens from Salmonella...