Fermentative profile of maize silage inoculated with Lactobacillus buchneri

Leandro Diego Da Silva,Mariele Cristina N Agarussi,João Paulo Santos Roseira,Thiago Carvalho Da Silva,Odilon Gomes Pereira,Vanessa Paula Da Silva

doi:10.22491/rca.2019.2924

Leandro Diego Da Silva, Mariele Cristina N Agarussi + Show 4 more

Open Access

https://doi.org/10.22491/rca.2019.2924

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Abstract

Biological silage additives can assist in making silages by promoting a rapid reduction in silage pH and preventing aerobic deterioration. The current Lactobacillus buchnerion the market produces acetic acid slowly and identifying strains that would improve aerobic stability earlier in the ensiling process would be helpful. This study aimed to investigate the changes in microbial population, dry matter (DM) recovery and fermentation profile of maize silage with or without inoculation with L. buchneri after 45 days of ensiling. The wild L. buchneri strains were isolated from tropical maize silage in a previous study. Four strains of L. buchneri (56.22, 56.27, 56.28 and 56.29) were used as inoculants. Data from the silo openings were analyzed as a completely randomized design, with four replicates per treatment (inoculants). Selected strains did not affect the DM content, yeast and mould population, DM recovery, water-soluble carbohydrates (WSC), lactic acid and butyric acid of maize silage after 45 days of ensiling (p> 0.05). The pH, lactic acid bacteria (LAB) population and concentrations of acetic and propionic acids and ethanol were affected by inoculants (p < 0.05). The strains 56.22, 56.27 and 56.28 showed lower pH than the untreated control silage, but lower acetic acid concentration

Highlights

Grazing is the most common and economical way to feed cattle, it cannot be done over the entire year, due the climatic conditions that limit the grasses growth
This study aimed to investigate the changes in microbial population, dry matter (DM) recovery and fermentation profile that occur in maize silage with or without inoculation with L. buchneri after 45 days of ensiling
The lactic acid bacteria (LAB) population was lower for the silage treated with the strain 56.29 in comparison with the others treatments (p < 0.001; Table 2)

Summary

Introduction

Grazing is the most common and economical way to feed cattle, it cannot be done over the entire year, due the climatic conditions that limit the grasses growth. The choice of suitable forage conservation process to provide constantly feed, essentially depends of the climatic conditions at harvest. In hot areas with dry seasons, probably the haymaking is the best choice for forage preservation, because it is a simple technology. In tropical regions with hot and humid climates, it is difficult to produce high quality hay, due to high humidity and frequent rainfall at the optimum stage of maturity for crop with better nutritional value. In this context, ensiling is an important method of forage preservation because it is not too dependent on weather as the haymaking. In many parts of world the silage is the major source of energy in the total mixed rations in ruminant diets (Chiba et al, 2005)

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