The purpose of this study was to evaluate winter annual forage crops for yield, and horse palatability under horse grazing during the fall and spring in Jeju. The winter annual forage crops such as Italian ryegrass(IRG), rye, and oat were planted in randomized block design in October 30. The horse grazing was initiated on March 17 of the following year. At the first cutting, the dry matter yield of rye was the highest with 4,600 kg/ha compared to the IRG and oat (p<0.05). But there were no significantly different in the yield of winter annual forage crops after the second and third harvests. The total dry matter yield showed rye 12,593 kg/ha, IRG 10,941 kg/ha, and oat 9,424 kg/ha respectively. The horse intake duration of the IRG was significantly higher than the oat and rye (p<0.05). In the first grazing and the second grazing, the intake duration of the IRG was 853.2 seconds and 989.4 seconds, respectively, with oat at 147.6 seconds, and 73.0 seconds, and rye at 89.4 seconds, and 33.18 seconds. The intake duration of IRG was longer than that of oat and rye (p<0.05). The intake rate of the IRG was 60.0% in the first and 82.8% in the second, and the average intake rate was 71.4%. When considering the maintenance of pastures and the palatability of horses, the IRG is the most suitable forage crop in winter annual forage crops in Jeju.

ABSTRACT
Ⅰ. 서 론
Ⅱ. 재료 및 방법
    1. 시험장소
    2. 시험설계
    3. 조사항목
    4. 통계
Ⅲ. 결과 및 고찰
    1. 사료작물의 생산성
    2. 말의 기호성
Ⅳ. 요 약
Ⅴ. 사 사
Ⅵ. REFERENCES

• 박남건(농촌진흥청 국립축산과학원) | Nam Geon Park (National Institute of Animal Science, RDA)
• 우제훈(농촌진흥청 국립축산과학원) | Jae Hoon Woo (National Institute of Animal Science, RDA)
• 유지현(농촌진흥청 국립축산과학원) | Ji hyun Yoo (National Institute of Animal Science, RDA)
• 신상민(농촌진흥청 국립축산과학원) | Sang-Min Shin (National Institute of Animal Science, RDA)
• 박형수(농촌진흥청 국립축산과학원) | Hyung Soo Park (National Institute of Animal Science, RDA)
• 황원욱(농촌진흥청 국립축산과학원) | Won-Uk Hwang (National Institute of Animal Science, RDA) Corresponding author