Impact of native spray‐dried lactic acid bacteria, packing density and wilting time on fermentation characteristics of experimental maize and lucerne silages

Blajman, Jesica E.; Signorini, Marcelo; Vinderola, Gabriel; Lingua, Mariana Soledad; Romero, Luis Alberto; Páez, Roxana; Casas, Cecilia; Bergamini, Carina Viviana; Giménez, Paula; Gaggiotti, Mónica

doi:10.1111/gfs.12562

Grass and Forage Science

2022

DOI: 10.1111/gfs.12562

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Impact of native spray‐dried lactic acid bacteria, packing density and wilting time on fermentation characteristics of experimental maize and lucerne silages

Jesica E. Blajman

Marcelo Signorini

Gabriel Vinderola

et al.

Abstract: Ensiling of fresh materials for their preservation is a well-known method based on spontaneous lactic acid fermentation under anaerobic conditions. The primary goal of making silage is to maximize the conservation of original nutrients in the forage crop, which is the basis of a profitable livestock performance (Kung Jr. et al., 2018).Silage fermentation may occur naturally under anaerobic conditions due to the presence of epiphytic bacteria in the fresh material, but the speed, efficiency and reproducibility … Show more

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Cited by 3 publications

References 76 publications

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Weissella cibaria DA2 cell-free supernatant improves the quality of sweet corn kernels during post-harvest storage

Wang,

Jia,

Xue

et al. 2024

Postharvest Biology and Technology

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Weissella cibaria DA2 cell-free supernatant improves the quality of sweet corn kernels during post-harvest storage

Wang,

Jia,

Xue

et al. 2024

Postharvest Biology and Technology

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Fermentation profile and dynamics of bacterial communities in vetch-oat ensiled with a novel spray-dried inoculant

Blajman,

Lingua,

Irazoqui

et al. 2023

J. Agric. Sci.

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This study aimed to examine and compare the effectiveness of a novel spray-dried inoculant and a commercial freeze-dried additive on the fermentation quality, aerobic stability and bacterial population of vetch-oat silage. An entirely random design used a 3 × 4 factorial arrangement of treatments, with and without lactic acid bacteria (LAB) inoculants and four fermentation periods. Physicochemical parameters, microbiological counts and 16S rRNA gene sequencing analysis on Nanopore MinION were conducted to characterize the ensiling process. Both LAB inoculants increased dry matter, crude protein, lactic, acetic and propionic acid contents, while reducing pH, neutral detergent fibre, ammonia nitrogen/total nitrogen and ethanol concentrations compared to the control group. Overall, the native inoculant decreased the cell load of coliforms, yeasts and moulds. In addition, bio-inoculants enhanced the aerobic stability of vetch-oat intercrops. After ensiling, bacterial alpha diversity decreased noticeably; inoculation reduced the number of observed operational taxonomic units and the Shannon and Simpson indices. Notably, the relative abundance of Lactobacillus in the control group was lower than in treated silages, while the relative values of Staphylococcus increased sharply in the uninoculated group. In conclusion, the native strains showed promise for usage as a bio-inoculant in the ensiling of vetch-oat at a mixture rate of 1:1, producing an immediate impact as well as a favourable effect on the post-opening phase. This represents the first report on 16S rRNA gene-based nanopore metagenomics applied to the bacterial analysis of vetch-oat silage, providing a microbiological insight where native and commercial strains dominate the natural epiphytic community.

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Performance of New Lactic Acid Bacteria Strains as Inoculants on the Microorganism Composition during Fermentation of Alfalfa Silage Containing Different Dry Matter Content

AKBAY

GÜNAYDIN

ARIKAN

et al. 2023

Black Sea Journal of Agriculture

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Alfalfa is the most planted perennial legume in the world due to its high nutritive value, protein content, productivity, and digestibility in addition to high vitamin and mineral content. It is also one of the hardest plants to ensile owing to its low reducible sugar and dry matter (DM) contents and high buffering capacity. In this study, the effects of inoculation with Lactobacillus bifermentans which is homofermentative and Lactobacillus brevis which is heterofermentative on the silage fermentation of different DM containing alfalfa forage. Alfalfa forages were unwilted, or wilted for 9 or 24 hours in order to achieve low (L), moderate (M) and high (H) DM contents. As a result of the research, it was determined that wilting improved the fermentation properties, decreased the pH value, and increased dry matter recovery. Microbial inoculation decreased the pH value, increased the dry matter recovery, and decreased the number of undesirable enterobacteria in silage. As a result of the research, it was determined that the wilting and inoculation should be applied for successful fermentation of alfalfa silage. It was also determined that inoculation with L. bifermentans gave the highest crude protein (CP) content while L. brevis gave the highest dry matter recovery (DMR).

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Impact of native spray‐dried lactic acid bacteria, packing density and wilting time on fermentation characteristics of experimental maize and lucerne silages

Cited by 3 publications

References 76 publications

Weissella cibaria DA2 cell-free supernatant improves the quality of sweet corn kernels during post-harvest storage

Weissella cibaria DA2 cell-free supernatant improves the quality of sweet corn kernels during post-harvest storage

Fermentation profile and dynamics of bacterial communities in vetch-oat ensiled with a novel spray-dried inoculant

Performance of New Lactic Acid Bacteria Strains as Inoculants on the Microorganism Composition during Fermentation of Alfalfa Silage Containing Different Dry Matter Content

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