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NTIS 바로가기한국동물자원과학회지 = Journal of animal science and technology, v.54 no.4, 2012년, pp.291 - 297
This study was carried out to investigate the effect of dietary phytase on nitrogen and phosphorus excretion of gestating and lactating sows (Yorkshire
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핵심어 | 질문 | 논문에서 추출한 답변 |
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Phytase의 역할은? | 돼지의 배합사료는 주로 식물성 원료로 되어있어 사료내 phytate의 함량이 높으며, phytate와 결합되어 소화되지 않는 사료원료는 대부분이 분뇨로 배설된다(Selle and Ravindran, 2008). Phytase는 단백질과 phytate의 결합을 끊어주어 단백질의 소화를 돕고(Ketaren 등, 1993; Fandrejewski 등, 1999; Gagne 등, 2002; Shelton 등, 2003), 체내에 흡수되는 단백질 양의 증가로 배설되는 양이 감소하여, 분뇨의 질소 배설량을 감소시키는 역할을 하게 된다. 또한 사료내 phytase 첨가는 식물 내에 있는 피틴 태인에서 피트산염과 인을 분리시켜 무기태인의 형태인 비피틴태인 으로서 체내 이용이 가능하게 된다(Dungelhoef 등, 1994; Bruce and Sundstol, 1995; Coweison 등, 2006; Selle and Ravindran, 2008). | |
현재 배출되는 가축분뇨의 양은 어느정도인가? | 가축분뇨는 악취발생, 수질오염 등 환경오염 원인이 되어 민원의 대상으로서 축산경영을 위한 양축농가들이 가장 어려워하던 문제 중의 하나이다(Boucque 등, 1987; Van Weerden 등, 1987; Tyrrell 등, 1988; Chiliard, 1989; Hanrahan, 1989). 가축의 분뇨는 주로 퇴비나 액비 및 대체 에너지와 사료로 이용되고 있으나 (Inbar 등, 1993; Huh and Jeong, 2001), 가축의 분뇨량, 특히 양돈업에서 배출되는 분뇨의 양은 이미 농지가 감당할 수 있는 한계를 넘어섰으며, 지역에 따라 매우 심각한 수준에 이르고 있다. 또한 해양 오염방지에 대한 국제협약 ‘런던협약 72’가 2006년 발효 되어 2012년부터 가축 분뇨의 해양투기가 전면 금지되면서 가축분뇨 처리방안 확보의 필요성이 시급하다. | |
가축분뇨로 인해 나타날 수 있는 문제점은? | 가축분뇨는 악취발생, 수질오염 등 환경오염 원인이 되어 민원의 대상으로서 축산경영을 위한 양축농가들이 가장 어려워하던 문제 중의 하나이다(Boucque 등, 1987; Van Weerden 등, 1987; Tyrrell 등, 1988; Chiliard, 1989; Hanrahan, 1989). 가축의 분뇨는 주로 퇴비나 액비 및 대체 에너지와 사료로 이용되고 있으나 (Inbar 등, 1993; Huh and Jeong, 2001), 가축의 분뇨량, 특히 양돈업에서 배출되는 분뇨의 양은 이미 농지가 감당할 수 있는 한계를 넘어섰으며, 지역에 따라 매우 심각한 수준에 이르고 있다. |
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