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The major effect of Lactobacillus inoculation on laboratory cassava (Manihot esculenta Crantz) silage was a change jiom a heterofermentative pattern observed in natural silage to a homofermentation. Small amounts of starter culture ( I % v/w) were required to produce a high level of lactic acid (> 28 g kg-D M ) and to reach a pH of at least 4. The Gompertz model was used to evaluate the effect of inoculation level on the lactic formation based on kinetic criteria. Also an empirical pH-lactic acid correlation was proposed to monitor the progress of ensiling, based solely on pH measurements. The simulation model may be used to improve guidelines for silo safety and to evaluate the effect of lactobacilli inoculants.

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