Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Evaluation of Apparent Ileal and Standardized Ileal Digestibility of Amino Acid in Feed Ingredients to Alterate the Protein Sources for Weaned Pigs

자돈에서 대체 단백질 원료사료의 외관상 회장 아미노산 소화율 및 표준 회장 아미노산 소화율 평가

  • Choi, Yo-Han (Swine Science Division, National Institute of Animal Science, Rural Development Administration) ;
  • Kim, Dong-Woo (Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University) ;
  • Kim, Jin-Soo (Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University)
  • 최요한 (농촌진흥청 국립축산과학원 양돈과) ;
  • 김동우 (강원대학교 동물생명과학대학 동물산업융합학과) ;
  • 김진수 (강원대학교 동물생명과학대학 동물산업융합학과)
  • Received : 2020.03.12
  • Accepted : 2020.06.05
  • Published : 2020.06.30
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Abstract

This study was conducted to evaluate the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of amino acids in feed ingredients for use as protein sources in swine feed. A total of six weaned pigs (Landrace×Yorkshire×Duroc, 14.4±0.35kg) surgically fitted with a T-cannula in the distal ileum were used in this study and were randomly allotted to a 6×6 Latin square design. Corn germ, corn gluten meal (CM), corn gluten feed (CF), chlorella (CH), and lysine co-product (LC) were used for evaluation, and the experimental periods of each ingredient included 5 days for adaptation and 2 days for collection. CH and LC had significantly higher (p<0.05) AID of lysine (79.1% and 78.7%, respectively). The AID of methionine was not significantly different among all feed ingredients. The AID of threonine of CH was significantly higher (p<0.05) than those of other ingredients and was 81.8%. CH, LC, and CM had higher (p<0.05) SID of lysine (80.4%, 79.5%, and 77.0%, respectively). The SID of methionine showed no difference among all treatments. CH showed 81.8% SID of threonine, which was significantly higher (p<0.05) than LC and CF. In conclusion, chlorella and lysine co-product showed the greatest AID and SID of amino acids, which makes them potentially valuable feed ingredients for use as protein sources in swine feed.

본 시험은 돼지 사료 내 단백질원으로 사용되는 원료사료의 외관상 회장 아미노산 소화율과 표준 회장 아미노산 소화율을 평가하기 위해 수행하였다. 본 시험에서 T-cannula를 회장에 설치한 자돈(Landrace×Yorkshire×Duroc, 14.4±0.35kg) 6두를 공시동물로 사용하였으며, 6×6 라틴스퀘어 설계법(Latin square design)을 이용하였다. 평가 원료사료로서 옥수수 배아, 옥수수 글루텐 밀, 옥수수 글루텐 피드, 클로렐라 및 라이신 부산물이 사용하였으며, 각 원료사료별 5일의 적응기간과 2일의 소화물 채취기간을 두었다. 라이신의 외관상 회장 소화율에서 클로렐라와 라이신 부산물이 유의적으로 높았으며(p<0.05), 각각 79.1% 및 78.7%이였다. 메치오닌의 외관상 회장 소화율은 원료사료들 간의 유의적인 차이가 없었다. 트레오닌의 외관상 회장 소화율은 클로렐라가 유의적으로 높게 나타났으며(p<0.05), 81.8%이였다. 라이신의 표준 회장 소화율에서 클로렐라, 라이신 부산물 및 옥수수 글루텐밀이 유의적으로 높게 나타났으며(p<0.05), 각각 80.4%, 79.5% 및 77.0%이였다. 메치오닌의 표준 회장 소화율은 원료사료들 간의 유의적인 차이가 없었다. 트레오닌의 표준 회장 소화율은 클로렐라가 라이신 부산물, 옥수수 글루텐 피드에 비해 유의적으로 높게 나타났으며(p<0.05), 84.2%이였다. 본 연구결과, 클로렐라와 라이신 부산물의 외관상 및 표준 회장 아미노산 소화율이 가장 우수하였으며, 이 원료들은 돼지 사료 내 단백질 대체 원료사료로서 가치가 있음을 시사한다.

Keywords

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