2891
Efficacy of probiotic feed additives : guidelines for the evaluation of the efficiency of microorganisms in dogs , cats , and horses ] Probiotic microorganisms are frequently in use as feed additives for farm and pet animals .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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