9Guo X H,Li D F,Lu W Q,et al.Screening of Bacillus strains as potential probiotics and subsequent confirmation of the in vivo effectiveness of Bacillus subtilis MA139 in pigs[J].Antonie van Leeuwenhoek,2006,90(2):139-146.
10Aly S M, AhmedY A, Ghareeb A A, etal. Studies on Bacillus Subtilis and Lactobacillus acidophilus as potential probiotics, on the immune response and resistance of Tilapia nilotica (Ore- ochromis niloticus) to chalenge infections [J]. Fish Shellfish Immunol, 2008, 25.- 128-136.