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Effect of Lactobacillus buchneri 40788 on the fermentation, aerobic stability and nutritive value of maize silage

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The effect of adding Lactobacillus buchneri 40788, a heterofermentative lactobacilli, to whole-plant maize and its effect on fermentation and aerobic stability of the resulting silage were evaluated. Whole-plant maize (380 g DM kg–1 fresh weight) was ensiled in laboratory silos after the following treatments: untreated, L. buchneri 40788 at 1 × 105, 2·5 × 105, 5 × 105, and 1 × 106 colony forming units g–1 of fresh forage or, a commercial inoculant containing homolactic acid bacteria, a single species of propionibacteria and enzymes. Addition of L. buchneri 40788 resulted in a decrease in lactic acid concentration but increased the concentration of acetic acid in silage and markedly decreased the numbers of yeasts present in the silage. All levels of L. buchneri 40788, increased the aerobic stability of silages but the effect was greatest for the two highest levels of inoculation. Treatment with the commercial inoculant had no effect on the fermentation or aerobic stability of silage. On-farm treatment of maize silage with L. buchneri 40788, stored in a bag silo, resulted in changes in fermentation that were similar to those observed in laboratory silos. Treatment decreased the numbers of yeast in silage and increased aerobic stability (+25 h) of the silage when exposed to air. Treatment had no effect on the dry-matter intake of silage fed to sheep. These results showed that treating silage with L. buchneri 40788 can increase the aerobic stability of maize silage in laboratory and farm silos.
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Keywords: Lactobacillus buchneri; acetic acid; aerobic stability; inoculant; silage

Document Type: Research Article

Affiliations: Delaware Agricultural Experiment Station, Department of Animal and Food Sciences, College of Agriculture and Natural Resources, University of Delaware, Newark, USA

Publication date: 2002-06-01

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