Cited by 119Ruminant Nutrition and Digestive PhysiologyProbiotics and Fermented FoodsAnimal Nutrition and Physiology

Effects of lactic acid bacteria with bacteriocinogenic potential on the fermentation profile and chemical composition of alfalfa silage in tropical conditions

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Silva, V.P., Pereira, O.G., Leandro, E.S., Da Silva, T.C., Ribeiro, K.G., Mantovani, H.C., Santos, S.A.·2016·Journal of Dairy Science

Abstract

The fermentation profile, chemical composition, and microbial populations of alfalfa silages treated with microbial inoculants (MI) at different fermentation periods (T) were evaluated in tropical conditions. A 4×6 factorial arrangement was used in a randomized design with 3 replicates. Fresh alfalfa was treated with (1) no treatment (CTRL), (2) commercial inoculant (CIN), (3) Pediococcus acidilactici (strain 10.6, S1), and (4) Pediococcus pentosaceus (strain 6.16, S2). An inoculant application rate of 10(6) cfu/g of fresh forage was used. The fermentation periods were 1, 3, 7, 14, 28, and 56 d. Alfalfa was harvested 82 d after sowing at the early flowering stage, chopped into 1.5-cm particle size, and ensiled in 25 × 35 cm vacuum-sealed plastic bags. The numbers of lactic acid bacteria, enterobacteria, mold, and yeast in alfalfa before ensiling were 5.42, 5.58, 4.82, and 4.8 log cfu/g, respectively. Silage chemical composition was evaluated only at 56 d. All parameters were affected by the interaction MI × T, except the concentrations of lactic and propionic acids. Alfalfa silage treated with S1 or S2 had lower pH values than CTRL from the first day until 28 d. However, the inoculants resulted in similar pH after 56 d, and these values were lower than the CTRL. The highest concentration of lactic acid was observed in the silage treated with S1 and S2 at 7 and 14 d of ensiling. The concentration of acetic acid was lower in the silages treated with S1 and S2 than the CTRL and CIN at 3 and 28 d of fermentation. There was no effect of MI or MI × T interaction on the microbial populations. However, the number of enterobacteria decreased over the fermentation period until 14 d and increased slightly after this time point. The chemical composition of alfalfa silage was not affected by MI at 56 d of ensiling. The strain P. pentosaceus 6.16 was the most efficient in dominating the fermentation process by decreasing the pH more quickly and increasing the concentration of lactic acid, suggesting its potential use as a silage inoculant.

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Crossref · 10.3168/jds.2015-9792

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Authors
Silva, V. P., Pereira, O. G., Leandro, E. S., Da Silva, T. C., Ribeiro, K. G., Mantovani, H. C., & Santos, S. A.
Affiliations
  • Universidade Federal de Viçosa (BR)
  • Universidade Federal da Bahia (BR)
Corresponding author
Pereira, O.G.
Venue
Journal of Dairy Science
Published
2016-03
Volume
99
Issue
3
Pages
1895-1902
ISSN
0022-0302 (ISSN-L)
OpenAlex
W2237919669
Cited by
119
References
35
Citations by year
2026: 8 · 2025: 11 · 2024: 5 · 2023: 13 · 2022: 22 · 2021: 16 · 2020: 11 · 2019: 19 · 2018: 5 · 2017: 5 · 2016: 4
FWCI
22.52
Type
journal article
Language
en
Open access
Locations
  • Journal of Dairy Science (publishedVersion)
  • PubMed (publishedVersion)
  • Americanae (AECID Library) (publishedVersion)
  • Americanae (AECID Library) (submittedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion)
Funders
the FAPEMIG
Topics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
Keywords
alfalfa silage, lactic acid bacteria, Pediococcus acidilactici, Pediococcus pentosaceus, microbial inoculants, silage fermentation, silage chemical composition, silage pH, lactic acid, propionic acid, acetic acid, Enterobacteriaceae, tropical conditions, silage quality
MeSH terms
Gastrointestinal Microbiome, Medicago sativa, Animals, Bacteriocins, Fermentation, Pediococcus, Silage, Lactic Acid

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