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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Change of Dry Matter Yield and Feed Values According to Different Growth Stages of Italian Ryegrass and Triticale Cultivated in the Central Northern Region

중북부 지역에서 생육단계에 따른 이탈리안 라이그라스와 트리티케일의 건물수량과 사료가치

  • 이홍주 (상지대학교 생명과학대학) ;
  • 변지은 (상지대학교 생명과학대학) ;
  • 황선구 (상지대학교 생명과학대학) ;
  • 류종원 (상지대학교 생명과학대학)
  • Received : 2020.02.04
  • Accepted : 2020.03.20
  • Published : 2020.03.31
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Abstract

The field experiment was carried out to evaluate changes of dry matter productivity and feed value of Italian ryegrass and triticale at different growth stages in Wonju from 2018 to 2019. Italian ryegrass and triticale forages were harvested at an interval of seven days from May to June. The dry matter yield of Italian ryegrass with 7,870 kg/ha harvested on May 16 was significantly higher than that harvested on May 3 and May 9. The dry matter yield of triticale with 12,050 kg/ha harvested on June 7 was significantly higher than that harvested from May 3 to May 16. The crude protein yields harvested on May 16 were 890 kg/ha for Italian ryegrass and 1,103 kg/ha for triticale and were significantly higher than those harvested on May 3 and May 9. The total digestible nutrient yield(TDN) of Italian ryegrass with 5,223 kg/ha harvested on May 16 was significantly higher than that harvested on May 3 and May 9. The total digestible nutrient yield of triticale with 8,277 kg/ha harvested on June 7 was significantly higher than that harvested during May, but not different from that harvested after June 7. Considering the dry matter yield, crude protein yield and total digestible nutrient yield, it is suggested that the optimal harvesting times for Italian ryegrass and triticale seem to be May 16 and June 7, respectively.

본 연구는 중북부지역인 원주에서 생육단계별 이탈리안 라이그라스와 트리티케일의 사료가치 변화를 조사하여 수확적기를 구명하고자 실시하였다. 이탈리안 라이그라스와 트리티케일은 5월 초순부터 1주일 간격으로 8회에 걸쳐 예취한 후 예취시기에 따른 사료가치를 비교하였다. 수확 시기별 이탈리안 라이그라스의 건물수량은 5월 3일(3,430 kg/ha)과 5월 9일(5,150 kg/ha) 수확일보다 5월 16일 수확일에 7,870 kg/ha로 유의적으로 높았다. 트리티케일의 건물수량은 5월 3일에서 5월 16일 수확일보다 6월 7일 수확일에 건물 수량이 12,250 kg/ha로 유의적으로 높았다. 조단백질 수량은 이탈리안 라이그라스, 트리티케일 공히 5월 3일, 5월 9일 수확일보다 5월 16일 수확일에 각각 890 kg/ha, 1,103 kg/ha로 유의적으로 증가하였으며 특히 이탈리안 라이그라스는 5월 16일 수확일에 조단백질 수량의 가장 높은 수치를 보였다. 이탈리안 라이그라스의 TDN 수량은 5월 3일(2,424 kg/ha), 5월 9일(3,449 kg/ha) 수확보다 5월 16일과 5월 21일 수확 시 5,223 kg/ha로 유의적으로 높았다. 트리티케일의 TDN 수량은 6월 7일 수확 시 8,277 kg/ha로 나타났으며 6월 이후 수확 시 통계적으로 유의적인 차이를 보이지 않았다. 따라서 중북부 지방에서 건물 수량, 조단백질 수량과 TDN 수량을 고려한 이탈리안 라이그라스의 수확적기는 출수 후기부터 개화기인 5월 16일, 트리티케일은 출수 후 3주인 6월 7일로 판단된다.

Keywords

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