Aerobic stability of sugar cane silages with a novel strain of Lactobacillus sp. isolated from sugar cane

Revista Brasileira de Zootecnia

Ávila, Carla Luiza da Silva¹  Schwan, Rosane Freitas¹  Oliveira, Dâmiany Pádua¹  Pinto, José Cardoso¹ 

[1] UFLA

关键词: acetic acid;    fermentation;    lactic acid;    microbiology     Introduction The susceptibility of a silage to the aerobic deterioration is an important factor for it is directly related to its quality and nutritive value;   

DOI  :  10.1590/S1516-35982012000200003

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The objective of this research was to evaluate the effect of the addition of two Lactobacillus strains on the aerobic stability of the sugar cane (Saccharum spp.) silages. The experiment was carried out in a completely randomized design with three replicates in split-plot in time scheme, so that the treatments (silages without inoculant and with novel strain or commercial inoculants) were randomized on plot and in times of aerobic evaluation of the silages (zero, two, four, and six days after the opening of the silos) as subplots. The loss of stability of silages was continuous during the time of aerobic exposure. Inoculants influenced the changes in populations of lactic acid bacteria and yeasts and in the ammoniacal nitrogen, acetic acid and ethanol concentrations. The dry matter, crude protein, soluble carbohydrates contents and pH values showed similar changes in all three silages studied. A linear increase in crude protein content and pH values and decrease in the soluble carbohydrates content were observed. The dry matter contents increased to a maximum of 335 g/kg on fresh matter at four days, followed by reduction after six days. The results showed that the use of inoculants is recommended because it promoted higher production of acetic and propionic acids, reducing the population of yeast and, therefore, improving the aerobic stability of silages.

【 授权许可】

CC BY-NC