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사료내 Conjugated Linoleic Acid 첨가가 육계의 성장 및 체지방 대사에 미치는 영향

Influence of Dietary Conjugated Linoleic Acid on Growth Performance and Body Fat Metabolism in Broiler Chickens

  • 고영현 (국립 진주산업대학교 동물생명과학과.동물생명산업지역협력연구센터(RAIRC)) ;
  • 양혜영 (국립 진주산업대학교 동물생명과학과.동물생명산업지역협력연구센터(RAIRC)) ;
  • 강선영 (국립 진주산업대학교 동물생명과학과.동물생명산업지역협력연구센터(RAIRC)) ;
  • 장인석 (국립 진주산업대학교 동물생명과학과.동물생명산업지역협력연구센터(RAIRC))
  • Ko, Y.H. (Department of Animal Science & Biotechnology, RAIRC, Jinju National University) ;
  • Yang, H.Y. (Department of Animal Science & Biotechnology, RAIRC, Jinju National University) ;
  • Kang, S.Y. (Department of Animal Science & Biotechnology, RAIRC, Jinju National University) ;
  • Jang, In-Surk (Department of Animal Science & Biotechnology, RAIRC, Jinju National University)
  • 발행 : 2005.04.30

초록

The current study was conducted to investigate the effects of dietary conjugated linoleic acid(CLA) on growth performance and body fat metabolism in broiler chickens. A total of 48 male birds aged 3 days were randomly allotted into three dietary groups; CORN(com oil 1.5%), CLA I (com oil 0.75 %+ CLA 0.75 %) and CLA II(CLA 1.5%) groups. After feeding commercial diet ad libitum for 3 weeks, eight selected birds on the basis of body weight were housed, two birds in a cage, and continuously given ad libitum corresponding experimental diet for another 2 weeks. As a result, dietary addition of CLA did not influence on body weight, gain and feed conversion rote. The relative weights of the liver and deposited fats(abdominal and thigh fat' pads) were not also affected by the dietary treatments. Serum glucose, triglyceride and cholesterol levels markedly( P < 0.05) decreased in CLA II compared with those in CORN group. However, serum nonesterified fatty acid(NEFA) was not altered by dietary CLA. Serum leptin level was tended to be decreased by dietary CLA without statistical difference. The diet supplemented with CLA caused a significant(P< 0.05) decrease in hepatic total lipid and NEFA without changing triglyceride level. Also, feeding dietary CLA at the level of 1.5% reduced leptin mRNA expression in the liver and abdominal fats compared with feeding com oil, In conclusion, our results suggest that dietary 1.5% CLA may affect, at least in part, lipid metabolism in the liver of broiler chickens.

키워드

참고문헌

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