Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Palatability and Yield of Winter Annual Forage Crops under Horse Grazing System in Jeju

제주지역 말 방목체계에서 동계사료작물의 말 기호성 및 생산성

  • 박남건 (농촌진흥청 국립축산과학원) ;
  • 우제훈 (농촌진흥청 국립축산과학원) ;
  • 유지현 (농촌진흥청 국립축산과학원) ;
  • 신상민 (농촌진흥청 국립축산과학원) ;
  • 박형수 (농촌진흥청 국립축산과학원) ;
  • 황원욱 (농촌진흥청 국립축산과학원)
  • Received : 2020.06.09
  • Accepted : 2020.06.24
  • Published : 2020.06.30
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Abstract

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.

본 연구는 일년생 사료작물인 이탈리안 라이그라스, 귀리, 호밀을 파종하여 말방목 체계하에서 생육특성, 생산성 및 방목지에서의 말의 기호성 등을 조사하기 위해 수행하였다. 일년생 사료 작물은 10월 30일에 파종하였으며 말 방목은 이듬해 3월 17일에 시작하였다. 1차 예취시 건물수량은 호밀이 4,600kg/ha로 이탈리안 라이그라스와 귀리에 비해 높은 수량을 나타내었다(p<0.05). 2차와 3차 예취시 건물수량은 사료작물간에 유의적인 차이를 보이 않았으나 시간이 경과할수록 이탈리안 라이그라스의 수량이 높아져 총 건물수량은 이탈리안 라이그라스가 10,941kg/ha으로 호밀 12,593kg/ha와 귀리 9,424kg/ha와 비슷하였다. 사료작물별 채식시간은 이탈리안 라이그라스가 귀리와 호밀에 비해서 월등히 높았다(p<0.05). 1차 방목과 2차 방목에서 이탈리안 라이그라스의 채식시간은 각각 853.2초, 989.4초였으며, 귀리는 147.6초 73.0초 그리고 호밀은 89.4초, 33.18초였다. 각 사료작물별 채식률은 이탈리안 라이그라스가 귀리와 호밀에 비해 1차와 2차 방목 모두 가장 높게 나타났다(p<0.05). 이탈리안 라이그라스의 채식률은 1차에서 60.0%, 2차에서 82.8%였으며, 평균 채식률은 71.4%를 보였다. 일년생 사료작물의 1번초의 수량은 호밀이 가장 높았지만, 작물의 재생능력과 총 생산성, 말의 기호성은 이탈리안 라이그라스가 월등히 우수했다. 이상의 결과를 종합해 보면 제주지역에서 말을 방목하기 위한 동계사료작물의 재배 이용은 이탈리안 라이그라스가 가장 적합하다고 판단된다.

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References

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