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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effect of Mixed Pasture Using Domestic Varieties Orchardgrass 'Kodione' and Tall fescue 'Purumi' on Forage Yields and Botanical Composition in Middle Region of Korea

중부지역에서 국내육성 목초 오차드그라스 '코디원' 및 톨 페스큐 '푸르미' 이용 초지조성 혼파조합별 사초생산성 및 식생에 미치는 영향

  • 황태영 (농촌진흥청 국립축산과학원) ;
  • 지희정 (농촌진흥청 국립축산과학원) ;
  • 김기용 (농촌진흥청 국립축산과학원) ;
  • 이상훈 (농촌진흥청 국립축산과학원) ;
  • 이기원 (농촌진흥청 국립축산과학원) ;
  • 최기준 (농촌진흥청 국립축산과학원)
  • Received : 2016.04.08
  • Accepted : 2016.06.02
  • Published : 2016.06.30
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Abstract

This study was carried out to determine the effect of mixed pasture using domestic varieties orchardgrass 'Kodione' and tall fescue 'Purumi' on forage yields and botanical composition from 2013 to 2015 in middle region of Korea. The following mixed pastures were used in this study: treatment A (orchardgrass oriented mixture with imported varieties), treatment B (orchardgrass oriented mixture), treatment C (orchardgrass and tall fescue oriented mixture), treatment D (tall fescue oriented mixture), treatment E (tall fescue oriented mixture without orchardgrass), treatment F (only orchardgrass), and treatment G (only tall fescue). In botanical compositions at last cutting time in 2015, treatment A had orchardgrass at 7.1%, tall fescue at 47.9%, kentucky bluegrass at 15.2% and white clover at 25%. Meanwhile, treatment B had orchardgrass at 25.9%, tall fescue at 47.0%, kentucky bluegrass at 4.9% and white clover at 18.3%. Consequentially, in botanical composition from 2014 to 2015, treatment A was changed more compare to other treatments B, C, D and E. The average of dry matter (DM) yield for 2 years of treatment E (18,369 kg/ha) was the highest among the seven treatments, but there was no significant difference among other treatments except treatment A (p>0.05). The crude protein (CP) and in vitro dry matter digestibility (IVDMD) of treatment A were 14.5% and 74.8%, and treatment E were 14.1% and 73.0%, respectively. The content of neutral detergent fiber (NDF) and acid detergent fiber (ADF) were lower in treatment E and A than other treatments, and treatment E showed high content of total digestible nutrient (TDN). Therefore, tall fescue oriented mixture using domestic tall fescue variety Purumi had good forage productivity, quality and botanical composition in middle region of Korea for the establishment of grassland.

본 연구는 중부지역에서 국내육성 신품종 이용 초지조성시 혼파조합별 사초 생산성 및 식생에 미치는 영향을 비교할 목적으로 2013년부터 2015년까지 3년간에 걸쳐 수행하였다. 실험에 사용된 혼파조합을 설명하면 다음과 같다. 처리 A는 도입종 OG 위주의 혼파조합, 처리 B는 OG 위주의 혼파조합, 처리 C는 OG와 TF 위주의 혼파조합, 처리 D는 TF 위주의 혼파조합, 처리 E 는 OG가 없는 TF 위주의 혼파조합이며, 처리 F는 OG 단파, 처리 G는 TF 단파를 이용하여 시험하였다. 도입종 OG 위주의 혼파조합 처리 A는 2015년 마지막 4차 예취시 OG의 식생구성비율이 7.1%, TF 47.9%, KBG 15.2% 및 WC 25.0%로 나타났으며, 국내 육성 품종을 이용한 OG 위주 혼파조합 처리 B의 마지막 식생구성비율은 OG 25.9%, TF 47.0%, KGB 4.9% 및 WC 18.3%로 나타났다. 그 결과 처리 A의 초지식생구성이 2014년부터 2015년까지 2년에 걸쳐 다른 처리에 비해 많이 변화하였다. 수량성은 국내육성 품종을 이용한 OG가 없는 TF 위주 혼파조합의 평균 건물수량 18,369 kg/ha로 높게 나타났지만 처리 A를 제외하고는 유의성이 없었다(p<0.05). 조단백질 함량과 건물소화율은 도입종을 이용한 OG 위주의 혼파조합 처리 A가 다른 처리 보다 높은 양상을 나타났고(각각 14.5% 및 74.8%), OG가 없는 TF 위주 혼파조합 처리 E도 높게 나타났다(각각 14.1% 및 73.0%). NDF 및 ADF 함량은 대체적으로 처리 E 및 A에서 다른 혼파조합 및 단파에 비해 낮은 결과를 보였으며(p<0.05), 처리 E의 TDN 함량은 다른 처리구에 비해 높게 나타났다. 이상의 결과를 종합해보면 수량성, 사료품질 및 초지식생을 고려하여 혼파조합을 선발한다면 국내 육성 톨 페스큐 품종 푸르미를 이용한 TF 위주의 혼파조합으로 초지를 조성하는 것이 여름철 고온다습과 동절기 혹한기와 같은 기상조건에서 유리하지만 가축의 기호성을 고려하여 혼파조합을 선발해야 하겠다.

Keywords

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