PURPOSE:A growth promotor for domestic fowls effective, for promoting growth of domestic fowls, for preventing and remedying salmonellosis of domestic fowls, containing a culture mold of a specific bacterium of the genus Clostridium as an active ingredient. CONSTITUTION:A growth promotor for domestic fowls containing a culture mold of Clostridium innocuum or Clostridium symbiosum, or their mixture as an active ingredient. The two bacteria are obligates, and its cultivation is carried out under unaerobic conditions. For example, a mixed solution of L-cysteine hydrochloride and ascorbic acid is added to a medium immediately after heat sterilization, dissolved oxygen in the medium is removed, and the bacterium is cultivated under unaerobic conditions. The cultivation is carried out at 30-42 deg.C at pH close to neutrality. After the cultivation is over, the culture solution is cooled, the mold is separated and recovered by centrifugation. It is not only effective for promoting growth but also for preventing and remedying salmonellosis of domestic fowls.
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