Bailey, J., Rolon, A., Hofacre, C., Holt, P., Wilson, J., Cosby, D., Richardson, L., & Cox, N. (2007). Resistance to Challenge of Breeders and Their Progeny with and Without Competitive Exclusion Treatment to Salmonella Vaccination Programs in Broiler Breeders. International Journal of Poultry Science, 6(6), 386–392. https://doi.org/10.3923/ijps.2007.386.392