Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

The dynamics of the bacterial communities developed in maize silage

(2017) The dynamics of the bacterial communities developed in maize silage. Microbial Biotechnology. pp. 1663-1676. ISSN 1751-7915

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Ensilage provides an effective means of conserving summer-grown green forage to supply as winter feed to ruminants. The fermentation process involved in the ensilage process relies on lactic acid bacteria (LAB). Here, 16S ribosomal DNA amplicon pyrosequencing was used to follow the dynamic behaviour of the LAB community during the ensilage of maize biomass, with a view to identify the key species involved in the process. The biomass used for ensilage was a single-cross maize hybrid, harvested at the milk-line stage. The crop was grown at three contrasting locations. Aspects of the physico-chemical composition of the material and the LAB species present were sampled at 0, 3, 6, 14, 21 and 32days after ensilage was initiated. In all three cases, members of the Leuconostocaceae family dominated the epiphytic bacterial community, notably Leuconostoc and Weissella, but some variation was noted in the abundance of certain Leuconostocaceae and Lactobacillaceae species, as well as that of some Acetobacteraceae, Enterobacteriaceae and Moraxellaceae species. The constellation of the microbiome which developed during the ensilage process differed markedly from that of the epiphytic one, with Lactobacillaceae, particularly Lactobacillus and Pediococcus spp. dominating. The abundance of heterofermentative Leuconostocaceae spp. in the epiphytic community and the extent of the transition from hetero- to homo-fermentation during the initial ensilage period are important factors in determining silage quality.

Item Type: Article
Keywords: lactic-acid bacteria real-time pcr lactobacillus-buchneri aerobic stability ruminal degradability grass-silage bile-acid fermentation corn plantarum Biotechnology & Applied Microbiology Microbiology
Page Range: pp. 1663-1676
Journal or Publication Title: Microbial Biotechnology
Journal Index: ISI
Volume: 10
Number: 6
Identification Number:
ISSN: 1751-7915
Depositing User: مهندس مهدی شریفی

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