Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Nutritional Value of Soybean Meal from Various Geographic Origin and Effect of Their Dietary Supplementation on Performance of Broilers

원산지가 다른 대두박의 영양적 가치평가와 육계의 생산성에 미치는 영향

  • Lee, Bo-Keun (Animal Resources Research Center, College of Animal Bioscience and Technology, Konkuk University) ;
  • Kim, Jae-Young (Animal Resources Research Center, College of Animal Bioscience and Technology, Konkuk University) ;
  • Kim, Ji-Sook (Animal Resources Research Center, College of Animal Bioscience and Technology, Konkuk University) ;
  • You, Sun-Jong (Animal Resources Research Center, College of Animal Bioscience and Technology, Konkuk University) ;
  • An, Byoung-Ki (Animal Resources Research Center, College of Animal Bioscience and Technology, Konkuk University) ;
  • Kim, Eun-Jib (Division of Animal Care, Cheonan Yonam College) ;
  • Kang, Chang-Won (Animal Resources Research Center, College of Animal Bioscience and Technology, Konkuk University)
  • 이보근 (건국대학교 동물생명과학대학 동물자원연구센터) ;
  • 김재영 (건국대학교 동물생명과학대학 동물자원연구센터) ;
  • 김지숙 (건국대학교 동물생명과학대학 동물자원연구센터) ;
  • 유선종 (건국대학교 동물생명과학대학 동물자원연구센터) ;
  • 안병기 (건국대학교 동물생명과학대학 동물자원연구센터) ;
  • 김은집 (천안연암대학 동물복지계열) ;
  • 강창원 (건국대학교 동물생명과학대학 동물자원연구센터)
  • Received : 2009.03.09
  • Accepted : 2009.06.08
  • Published : 2009.06.01
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Abstract

This study was carried out to investigate the nutritional value of soybean meal (SBM) from various geographic origins and the effects of their dietary supplementation on performance of broiler chickens. Nutritional value of dehulled SBM originating from USA, and non-dehulled SBM from India (IND), Argentina (ARG) and Korea (KOR) were evaluated by analyzing chemical composition, urease activity (UA) and KOH solubility, and determining true metabolizable energy (TME), nitrogen corrected TME (TMEn) and true amino acid availability (TAAA). The contents of crude protein ranged from 45.43% (ARG) to 48.47% (USA) and those of crude fiber varied widely from 3.48% (USA) to 7.12% (IND). The measurements of lysine varied from 2.79% (IND) to 3.09% (USA) and those of methionine from 0.56% (IND) to 0.65% (USA). The values of TMEn varied from 2986.6 kcal/kg (IND) to 3228.9 kcal/kg (USA) and the averages of TAAA were from 91.61% (IND) to 92.27% (USA). UA was found to be from 0.02 (ARG) to 0.04 (KOR, USA) and those of KOH solubility from 73% (ARG) to 84% (USA). A total of four hundred 20-days-old male broiler chicks were divided into four groups and fed with isocaloric and isonitrogenous experimental diets containing 27.5% of SBM and same amounts of lysine and sulfur amino acids for 15 days. Final body weight and body weight gain were the highest in birds fed with SBM from USA and lowest in birds fed with SBM from IND although the differences were not statistically significant. The feed/gain in chicks fed diet containing SBM from USA was significantly improved (p<0.05) compared to those of the other groups. There were no significant differences in carcass characteristics and the concentration of total cholesterol in serum among the treatments. The results of in vitro assay and bioassay agreed with the performance of broiler chicks, and thus there were close correlation between the broiler performance and the measured nutritive values of SBM. In conclusion, dehulled SBM from USA was superior to non- dehulled SBM from ARG and IND with regard to nutritive values.

본 연구는 일반대두박인 아르헨티나, 인도 및 한국산 그리고 탈피대두박인 미국산 대두박의 육계 사료원료로서의 영양적 품질을 평가하기 위한 목적으로 수행되었다. 대두박의 영양적 가치평가를 위해 일반성분, 아미노산 함량, TME, TMEn, 아미노산 이용률, urease 활성도 및 KOH 용해도를 측정하였고, 육계의 생산성 평가를 위해 20일령의 육용종 수평아리 (Ross) 400수에게 옥수수-대두박을 기초로 각 처리구 별로 원산지가 다른 대두박을 이용한 실험사료를 15일간 급여하였으며, 4처리 4반복 (반복당 25수)으로 완전 임의 배치하여 사양실험을 실시하였다. 대두박의 일반성분과 아미노산의 함량을 조사한 결과 조단백질 함량은 45.43% (아르헨티나산)에서 48.47% (미국산)의 범위였고, 조지방 함량은 1.11% (인도산)에서 1.96% (아르헨티나산)의 범위였다. 조회분 함량은 5.89% (아르헨티나산)에서 7.18% (인도산)의 범위였고, 조섬유 함량은 3.48% (미국산) 에서 7.12% (인도산)의 범위였다. 아미노산의 함량은 조단백질 함량과 비례하여 미국산이 가장 높았으며, 대부분의 아미노산 함량에서 인도산과 아르헨티나산이 유의하게 낮은 수치를 보였다. 에너지 함량 즉 TME와 TMEn 값은 미국산이 각각 3245.4 kcal/kg 및 3228.9 kcal/kg으로 가장 높았으며, 한국산, 아르헨티나산, 인도산의 순으로 낮았으나 유의한 차이는 아니었다. 아미노산 이용률은 평균적으로 유의한 차이는 아니었으나, 미국산이 가장 높았고 한국산, 아르헨티나산, 인도산의 순으로 낮았다. Urease 활성도는 대두박 간에 유의한 차이가 없었고, KOH 용해도의 결과를 보면 아르헨티나산의 KOH 용해도가 유의하게 낮은 수치를 보였으나 모든 대두박이 허용치를 벗어나지 않아 모두 적절한 열처리를 한 대두박의 결과를 나타냈다. 종료체중, 증체량 및 사료섭취량 모두 유의한 차이가 없었으나 사료요구율은 미국산이 유의하게 낮은 결과를 보였다 (P<0.05). 도체특성 및 혈 중 총 콜레스테롤 농도는 모두 통계적으로 유의한 차이를 보이지 않았다.

Keywords

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