Chemical characteristics, aerobic stability, and microbiological counts in corn silage re-ensiled with bacterial inoculant

Abstract

The objective of this work was to evaluate the effects of re-ensiling and bacterial inoculation on the quality of corn silage. The experiment was carried out in a 2x2 factorial design with or without inoculant (association of Lactobacillus plantarum and Propionibacterium acidipropionici), and with re-ensiling after 36 hours of aerobic exposure or only ensiling of the whole plant of 'BRS 1055' corn. The fermentative quality, nutritional parameters, dry matter losses, aerobic stability, and microbiological counts of silages were evaluated. Re-ensiling caused an increase of pH and in acetic acid and propionic acid concentrations, as well as in the dry matter (DM), crude protein, neutral detergent fiber, and neutral detergent fiber crude protein contents. Conversely, there was a reduction in the nonfiber carbohydrates concentration and in in vitro dry matter digestibility for the re-ensiled material. All changes were explained by the higher-effluent production and DM loss of re-ensiled material that was subjected to two compactions. Microbiology was not altered by the treatments. The use of inoculant altered ash content, but it did not influence other parameters. In contrast, re-ensiling after 36 hours of aerobic exposure caused a reduction in the nutritive value of corn silage and accentuated the DM losses.

Re‐ensiling effects on sorghum silage quality, methane emission and sheep efficiency in tropical climate

“…Reductions in NFC concentrations were also found by Coelho et al. (2018) and those of IVDMD by Chen and Weinberg (2014), Coelho et al. (2018) and Michel et al.…”

“…Acetic acid increase and lactic acid reduction were also found by Chen and Weinberg (2014) in corn silage exposed to air after silo opening and by Coelho et al. (2018) in corn silage exposed to air before re‐ensiling. Michel et al.…”

“…(2018) and those of IVDMD by Chen and Weinberg (2014), Coelho et al. (2018) and Michel et al. (2016).…”

“…However, increases in DM contents with exposure to air were observed by Coelho et al. (2018) in corn silage exposed for 36 hr and by Chen and Weinberg (2014) in corn and wheat silages exposed for up to 48 hr. In sorghum silages exposed to air for up to 7 days after silo opening, Weinberg et al.…”

Efeito do aditivo químico a base de ácido propiônico e ácido fórmico em silagens de milho: perfil fermentativo e desempenho de vacas leiteiras

“…A comercialização de silagem no mercado brasileiro vem crescendo ao longo dos anos exigindo a necessidade de reensilagem da SM (Coelho et al, 2018). Alguns fatores têm contribuído para estimular o mercado de venda de silagem, tais como: área limitada para o cultivo da cultura do milho, perdas excessivas durante o armazenamento, limitações climáticas e topografia (de Lima et al, 2016).…”