The purpose of this study was to investigate the proper feeding level and duration of fermented barley grain feed before harvesting to improve the availability of barley for feed. Trial 1 was to investigate the proper feeding amount of fermented barley grain fermented feed, and we prepared 32 heads (603.4 ± 42.7kg) of 22-month-old Hanwoo steer (603.4 ± 42.7kg) for 8 heads in 4 treatment groups. 48 heads (625.8 ± 13.1kg) for Trial 2 were used for 12heads per 4 treatments, and were reared for about 9 months until 30 months of age. Trial 1 is treated a Control group that feed 10㎏ of concentrate, replaces 10% fermented barley grain feed(FBGF) of the control by (TRT 1) and 20% (TRT 2) and 30%(TRT 3). Concentrate and FBGF fed 9, 2.1 kg, 8, 4.2 kg, 7 and 7, 6.3 kg on each treatments respectively and 1.5 kg of rice straw for forage. In Trial 2, 10% of alternative diets were judged to be appropriate, and the control of 9kg of diets and barley grain fermented feeds were used to determine the appropriate feeding period. The treatments were 3 months before shipment (TRT 1), 6 months (TRT 2) and 9 months (TRT32). Each treatment group had 8 and 2.1 kg of concentrate and barley grain fermentation, respectively. As a feed, rice straw was fed to 1.5 kg. The daily gains per treatment were higher in TRT 1 and TRT 3 was similar to the Control. Body weight and daily gain during the test period were higher in TRT 1 fed 10% barley grain fermented feed. TRT 2 was the highest at 6.13, and TRT 3 was 6.0, which was higher than 5.63 of TRT 1 and 5.5 of Control.

ABSTRACT
Ⅰ. 서 론
Ⅱ. 재료 및 방법
    1. 시험장소, 공시동물 및 시험기간
    2. 실험설계 및 사양관리
    3. 조사항목 및 분석방법
    4. 통계처리
Ⅲ. 결과 및 고찰
Ⅳ. 요 약
Ⅴ. 사 사
Ⅵ. REFERENCES

• 장선식(국립축산과학원 한우연구소) | Sun-Sik Chang (Hanwoo Research Institute, National Institute of Animal Science) Corresponding author
• 권응기(국립축산과학원 한우연구소) | Eun-Ki Kwon (Hanwoo Research Institute, National Institute of Animal Science)
• 이은미(국립축산과학원 한우연구소) | Eun-Mi Lee (Hanwoo Research Institute, National Institute of Animal Science)
• 황소미(국립축산과학원 한우연구소) | So-Mi Hwang (Hanwoo Research Institute, National Institute of Animal Science)
• 조상래(국립축산과학원 한우연구소) | Sang-Rae Cho (Hanwoo Research Institute, National Institute of Animal Science)
• 김의형(국립축산과학원 한우연구소) | Ui-Hyoung Kim (Hanwoo Research Institute, National Institute of Animal Science)
• 정기용(한국농수산대학교) | Ki Yong Chung (Korea National College of Agriculture and Fisheries)