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The fermentation of lactic acid by two Propionibacterium spp. and by Micrococcus lactilyticus was examined in simulated silage. Fermentation occurred in silages which achieved a low pH (<4·0) but this resulted only in a small rise in pH and a secondary clostridial fermentation did not occur. Lactic acid‐fermenting organisms resembling Propionibacterium spp. were isolated from authentic silages but not from fresh grass.
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Michael K. Woolford (1975) studied this question.
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