| 摘要 |
<p>The present invention is directed to a method of preventing the over-production of acid in an animal comprising administering to the animal a vaccine including an acid producing microorganism and/or antigenic fragment or fragments thereof effective to prevent the over-production of acid in the animal. The vaccine includes lactic acid producing microorganisms obtainable from the normal gut flora of an animal. In particular the vaccine includes Streptococcus bovis and/or Lactobacillus spp..</p> |
