title: Characterization and application of lactic acid bacteria for tropical silage preparation.
abstract: Strains TH 14, TH 21 and TH 64 were isolated from tropical silages, namely corn stover, sugar cane top and rice straw, respectively, prepared in Thailand. These strains were selected by low pH growth range and high lactic acid-producing ability, similar to some commercial inoculants. Based on the analysis of 16S ribosomal RNA gene sequence and DNA-DNA relatedness, strain TH 14 was identified as Lactobacillus casei, and strains TH 21 and TH 64 were identified as L. plantarum. Strains TH 14, TH 21, TH 64 and two commercial inoculants, CH (L. plantarum) and SN (L. rhamnosus), were used as additives to fresh and wilted purple Guinea and sorghum silages prepared using a small-scale fermentation method. The number of epiphytic lactic acid bacteria (LAB) in the forages before ensilage was relatively low but the numbers of coliform and aerobic bacteria were higher. Sorghum silages at 30 days of fermentation were all well preserved with low pH (3.56) and high lactic acid production (72.86 g/kg dry matter). Purple Guinea silage inoculated with LAB exhibited reduced count levels of aerobic and coliform bacteria, lower pH, butyric acid and ammonia nitrogen and increased lactic acid concentration, compared with the control. Strain TH 14 more effectively improved lactic acid production compared with inoculants and other strains. © 2016 Japanese Society of Animal Science.
authors.affiliation: Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand.
authors.forename: Suradej
authors.initials: S
authors.lastname: Pholsen
authors.affiliation: Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand.
authors.forename: Waroon
authors.initials: W
authors.lastname: Khota
authors.affiliation: Henan Provincial Key Laboratory of Ion Beam Bio-engineering, Zhengzhou University, Zhengzhou, Henan, China.
authors.forename: Huili
authors.initials: H
authors.lastname: Pang
authors.affiliation: Department of Human and Environmental Sciences, University of Hertfordshire, Hertfordshire, UK.
authors.forename: David
authors.initials: D
authors.lastname: Higgs
authors.affiliation: Japan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, Japan. cai@affrc.go.jp, surpho@kku.ac.th.|National Institute of Livestock and Grassland Science, Tsukuba, Ibaraki, Japan. cai@affrc.go.jp, surpho@kku.ac.th.
authors.forename: Yimin
authors.initials: Y
authors.lastname: Cai
mesh_terms: D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D019344:Lactic Acid / Q000096:biosynthesis; D007778:Lactobacillus / Q000302:isolation & purification / Q000378:metabolism; D006109:Poaceae; D012820:Silage / Q000382:microbiology*; D045868:Sorghum; D013785:Thailand; D014329:Tropical Climate
chemical_list: D019344:Lactic Acid
keywords: Guinea grass; lactic acid bacteria; sorghum; tropical silage