In the current study, lactic lactic acid bacteria (LAB) Lactobacillus plantarum and Pediococcus pentosaceus were used as a mixed additive for the production of Orchardgrass silage by ensiled method and nutritional change fermentation ability and microbial content of experimental silages. The addition of LAB to Orchardgrass during ensiling process rapidly reduced the pH of the silages than the non-inoculated silages. In addition, the lactic and acetic acid content of silage was increased by LAB strains than the non-inoculated silages whereas butyric acid content was reduced in silage treated with LAB. A microbiological study revealed that higher LAB but lower yeast counts were observed in inoculated silages compared to non-inoculated silage. Overall data suggested that the addition of LAB stains could have ability to induce the fermentation process and improve the silage quality via increasing lactic acid and decreasing undesirable microbes.

ABSTRACT
Ⅰ. INTRODUCTION
Ⅱ. MATERIAL AND METHODS
    1. Place and collection of Orchardgrass
    2. Silage production from Orchardgrass plant
    3. Quantification of organic acids and microbialpopulation enumeration in ensiled silages
    4. Statistical Analysis
Ⅲ. RESULTS AND DISCUSSION
Ⅳ. CONCLUSION
Ⅵ. REFERENCES

• Soundharrajan Ilavenil(Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration)
• Karnan Muthusamy(Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration)
• Jeong Sung Jung(Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration)
• Bae Hun Lee(Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration)
• Hyung Soo Park(Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration)
• Ki Choon Choi(Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration) Corresponding author