Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Effects of Sowing Mixed Legume Forage and Applying Cattle Manure on the Productivity and Organic Hanwoo Feeding Capacity of Whole Crop Wheat

콩과 사료작물의 혼파와 우분의 시용이 총체 밀의 생산성과 유기한우 사육능력에 미치는 영향

  • Received : 2015.05.15
  • Accepted : 2015.05.28
  • Published : 2015.06.30
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Abstract

This study was to assess the effects of sowing mixed legume forage and applying fermented cattle manure on the productivity and feed value of whole crop wheat (WCW) as a representative of winter crops and also to estimate feeding capacity of Korean native cattle (Hanwoo) per unit area by defining optimal application levels of cattle manure for more fertile soil and manure recycling for the purpose of reduced environmental pollution and efficient production of organic forage contributable to production of organic animal products. Sowing mixed legume forage significantly (p<0.05) increased yields of dry matter (DM), crude protein (CP) and total digestible nutrients (TDN) for WCW compared to WCW alone sowing, but there were no differences between mixed sowing treatments. The yields of DM, CP and TDN were significantly (p<0.05) higher in 100~150 kg N/ha. The CP and acid detergent fiber (ADF) contents were highest in mixed sowing with hairy vetch, followed by sowing mixed forage pea and WCW alone (p<0.05). There were no differences in CP among cattle manure application levels. As nitrogen application level increased, ADF content increased (p<0.05), but TDN content decreased (p<0.05). Feeding capacity of organic Hanwoo (head/ha) weighing 450 kg of body weight with 400 g of daily gain significantly (p<0.05) increased due to mixed sowing with legume forage, and with increasing application levels of fermented cattle manure, feeding capacity significantly (p<0.05) increased. The results indicated that mixed-sowing of WCW and legume forage not only reduced nitrogen application level of fermented cattle manure by over 50 kg per ha but also increased their feed value and productivity, and feeding capacity. This would be contributable to diversity of forage resources as well as production of organic animal product by creating low cost and high quality of forage.

본 연구는 토양오염을 감소시키고 유기축산물의 생산에 기여할 수 있는 유기조사료를 효율적으로 생산하기 위해 대표적인 동계작물인 총체 밀에 콩과 사료작물의 혼파와 발효우분을 시용하여 생산성과 사료가치를 평가하고, 토양의 지력 향상과 가축분뇨의 자원화를 위한 단위면적당 유기한우 사육능력을 추정하고자 하였다. 콩과 사료작물의 혼파에 따른 2년(2012~2013년) 평균 총체 밀의 건물, 조단백질 및 TDN 수량은 6.10~7.70, 0.59~0.76 및 3.84~4.74톤/ha으로 단파로 재배했을 경우의 4.07, 0.35 및 2.54 톤/ha 보다 유의하게 증가하였으나 혼파구 간에는 차이가 없었고, 발효우분의 질소시용수준이 증가함에 따라 총체 밀의 평균 건물, 조단백질 및 TDN 수량은 100~150 kg N/ha (7.24~7.59, 0.67~0.73 및 4.43~4.69톤/ha)가 무비구(5.96, 0.57 및 3.71톤/ha)에 보다 유의하게 증가하였다(p<0.05). 총체 밀의 조단백질 함량은 콩과사료작물의 혼파구에서 평균 9.83~10.03%로 총체 밀 단파구의 8.37%보다 유의하게 높았고 ADF 함량은 헤어리 베치 혼파구 그리고 RFV는 사료용 완두 혼파구가 다른 처리구 보다 유의하게 높았으며(p<0.05), 발효우분의 질소시용수준에 따른 조단백질 함량은 9.17~9.52%로 처리수준 간 차이가 없었고 ADF 함량은 시용수준이 100 kg N/ha 까지 증가함에 따라 유의하게 증가하였고 TDN 함량은 반대로 유의하게 감소하였다(p<0.05). 콩과 사료작물의 혼파에 따른 총체 밀에 의한 유기한우 사육능력(체중 450 kg, 400 g 일당증체 목표)은 평균 3.99~4.20두로 단파구(평균 2.21두) 보다 유의하게 증가하였고. 발효우분 시용수준이 증가됨에 따라 질소 수준 100 kg/ha(평균 3.68두)까지 무비구(평균 3.09두) 보다 총체 밀에 의한 유기한우 사육능력도 유의하게 증가하였다(p<0.05). 이상의 결과를 종합해 볼 때, 총체 밀 재배 시 콩과 사료작물의 혼파 하였을 경우에는 단파재배 보다 발효우분의 질소시용수준을 ha 당 50 kg 이상 줄이면서도 건물수량을 포함한 생산성과 유기한우 사육능력 증대는 물론 조단백질 함량 등 사료가치를 향상을 시켜 한우사양 시 조사료자원의 다양화 뿐 아니라 저투입에 의한 양질의 조사료 생산으로 유기축산물 생산에 크게 기여하리라 사료된다.

Keywords

Acknowledgement

Supported by : 대구대학교

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