9Bhandari S, Xu B, Nyachoyi C, et al. Evaluation of alternatives to antibiotics using an Escheriehia toll K88+ model of piglet diarrhea: Effects on gut microbial ecology[J]. Journal of animal science, 2008, 86(4): 836.
10Murray M. Salmonella: virulence factors and enteric salmonellosis [J]. Journal of the American Veterinary Medical Association, 1986, 189(2): 145.
