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육계에서 옥수수 주정박의 아미노산 소화율 조사

Amino Acids Digestibility of Corn Distillers Dries Grains with Solubles in Broiler Chickens

  • 황보종 (농촌진흥청 국립축산과학원 가금과) ;
  • 홍의철 (농촌진흥청 국립축산과학원 가금과) ;
  • 나재천 (농촌진흥청 국립축산과학원 가금과) ;
  • 김지혁 (농촌진흥청 국립축산과학원 가금과) ;
  • 강환구 (농촌진흥청 국립축산과학원 가금과) ;
  • 김민지 (농촌진흥청 국립축산과학원 가금과) ;
  • 김동욱 (농촌진흥청 국립축산과학원 가금과) ;
  • 김원 ((주)밀테크)
  • HwangBo, Jong (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Hong, Eui-Chul (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Na, Jae-Cheon (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Kim, Ji-Hyuk (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Kang, Hwan-Gu (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Kim, Min-Ji (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Kim, Dong-Wook (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Kim, Won (Milltech, Co., LTD.)
  • 투고 : 2012.11.02
  • 심사 : 2012.12.04
  • 발행 : 2012.12.31

초록

본 시험은 옥수수 주정박의 첨가가 소화 부위별 아미노산 소화율에 미치는 영향을 조사하기 위하여 수행하였다. 공시계는 Ross종 육계 수컷 24수를 이용하였다. 시험사료는 옥수수-대두박 위주의 사료(CP 19%, ME 3,150 kcal/kg)를 기초 사료로 하였으며, 주정박을 6%와 12% 첨가한 사료를 시험사료로 하였다. 시험 설계는 사료 내에 주정박을 첨가시킨 양에 따른 3처리구(처리구당 8수)로 나누고, 소화물 채취 부위에 따른 4처리구로 나누어 $3{\times}4$의 복합 요인으로 소화율을 조사하였다. 소화율 측정을 위한 시료 수집 부위는 공장의 말단부(DJ, the distal end of the jejunum), 회장의 중부(MI, the middle part of the ileum), 회장의 말단부(DI, the distal end of the ileum) 및 직장의 말단부(DR, the distal end of the rectum)로 하였다. 주정박 첨가 수준과 채취 부위 사이에는 유의한 상관관계가 없었다. 본 시험의 진정 소화율은 부위에 따라서는 유의적인 차이는 발견되지 않았다(P<0.05). CDDGS 첨가 수준에 따른 소화율은 필수 아미노산 중 lysine의 소화율이 CDDGS 첨가구에서 감소하였다(P<0.05). 또한 비필수 아미노산에서는 glycine의 소화율이 CDDGS 첨가구에서 감소하였으며(P<0.05), 다른 아미노산들은 처리구간에 차이가 없었다. 따라서 CDDGS는 lysine과 glysine 소화율은 대조구에 비해 낮았으나, 대체적으로 대조구와 유사한 소화율을 보여 부존 자원으로서 가금 사료에 이용할 수 있으리라 사료된다.

To investigate the effects of dietary substituent of corn distiller's dries grains with solubles (CDDGS) on the amino acid digestibility of broiler diet, twenty four Ross broilers (6-wk-old) were used in this study. Basal diet (CP 19%, ME 3,150 kcal/kg) was formulated on corn-soybean meal and two levels of CDDGS (6 and 12%) were supplemented to basal diet. CDDDS levels (0, 6 and 12%) and 4 different sites of chicken intestines (distal end of jejunum, the middle part of the ileum, the distal end of ileum and the distal end of the rectum) were evaluated factorial as $3{\times}4$ three arrangement. Statistical analysis did not show any significant interaction between dietary treatments and the sites of the intestines in amino acid digestibility (P>0.05). There was no significant difference among the sites of chicken intestines in the digestibility (P<0.05). The digestibility of lysine (essential amino acid) and glycine (non-essential amino acid) decreased at increasing supplementation of CDDGS (P<0.05). There was no significant difference on the digestibility of other amino acids studied. In conclusion, the result of this work showed that CDDGS can use as alternative resources in broiler diets.

키워드

참고문헌

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