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KMID : 1025520060480050691
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Journal of Animal Science and Technology
2006 Volume.48 No. 5 p.691 ~ p.698
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Effect of Yeast Addition in Rice Straw Silage Fermentation
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Ok J. U.
Lee Sang-Min
Lee Shin-Ja
Lim J.-H.
Kang Tae-Won
Jung Hee-Young
Moon Yea-Hwang
Lee Sung-Sill
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Abstract
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Three species of the yeast Saccharomyces cerevisiae, Humicola grisea and Candida glabrata were assumed as microbial inoculants for fermentation of rice straw silage. Four types of silage innoculated with three yeasts including control (non-treatment) were opened on day 1, 3, 6, 9, 15 and 20 after ensiling, and analyzed for fermentation status (pH, crude protein, microbial counts) and the microbial population attached with silage texture using SEM (Scanning Electron Microscopy). The results obtained were summarized as fallow;
The pH of silage juice was decreased to 4.3 after 6th day of fermentation in the treatments innoculated with yeast, but was not changed at the ranges of 5.47 to 5.67 in control. Crude protein concentration of silage was increased by 38～41% with yeast inoculation compared to control. From SEM observation, it could be confirmed that crude protein concentration of silage was increased by microbial growth and SCP synthesis. The yeast Saccharomyces cerevisiae and Candida glabrata could be used as useful fermenters of rice straw silage.
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KEYWORD
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Saccharomyces cerevisiae, Humicola grisea, Candida glabrata, Rice straw silage, SEM
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