SUMMARY: An investigation was made of the processes occurring during the ensiling of sugar-beet pulp. Pulp was enclosed in rubber bags buried in a silo to obtain the same conditions of pressure and temperature as prevail in the silo itself. An outlet from the bags was provided for the measurement of evolved gases and seepage. Pulp alone was compared with pulp+4% molasses. The process was followed by withdrawing bags at short intervals, and making bacteriological and chemical examinations of the contents.

The addition of molasses resulted in a pure lactic acid fermentation of the sucrose with very small losses in dry matter. Few butyric acid bacteria were found. Where molasses was not added a vigorous butyric acid fermentation of hexosans and pentosans occurred, resulting in 12-15% loss of dry matter due to seepage and formation of CO, the number of butyric acid bacteria rising to 10-10/g. silage.

The initial flora of lactic bacteria consisted of Orla Jensen, which was soon displaced by and Orla Jensen. After 2-3 months only Orla Jensen was found.


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