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

Journal of Dairy Science
V P SilvaS A Santos

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 the...Continue Reading

References

Jan 3, 2001·Applied and Environmental Microbiology·S J Oude ElferinkF Driehuis
Oct 29, 2003·International Journal of Food Microbiology·Hilário C Mantovani, James B Russell
Oct 24, 2007·Journal of Dairy Science·I FilyaF E Contreras-Govea
Sep 23, 2014·Journal of Dairy Science·W K CoblentzK P Coffey

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Citations

Aug 16, 2016·Journal of Dairy Science·Isabel R AmadoLorenzo Pastrana
Jan 24, 2017·Asian-Australasian Journal of Animal Sciences·XianJun YuanTao Shao
Apr 21, 2017·Asian-Australasian Journal of Animal Sciences·Zhihao DongTao Shao
Dec 24, 2018·Foods·Carolina Cortés-HerreraFabio Granados-Chinchilla

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