한국가금학회지 (Korean Journal of Poultry Science)

  • 제29권2호
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  • Pages.125-134
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  • 2002
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  • 1225-6625(pISSN)
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  • 2287-5387(eISSN)
한국가금학회 (The Korean Society of Poultry Science)
권호 표지

육계사료에 CLA와 다른 유지의 첨가가 생산성 및 계육의 지방산 조성에 미치는 영향 비교

A Comparison of Dietary Supplemental Conjugated Linoleic Acid and Various Gil on Performance and Fatty Acid Composition of Broiler Chicks

  • 류경선 (전북대학교 바이오 식품 소재 개발 및 산업화 연구센터) ;
  • 류명선 (전북대학교 동물자원과학과) ;
  • 김은성 (전북대학교 동물자원과학과) ;
  • 최형송 (우석대학교 생명자원과학부) ;
  • 정문웅 (우석대학교 식품영양식품공학부)
  • 발행 : 2002.06.01
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초록

육계사료에 CLA, 대두유, 시판용 우지의 수준별 급여가 육계의 생산성 및 계육의 성상에 미치는 영향을 비교하기 위하여 두 차례의 사양실험을 5주간 시행하였다. 사육 전기 3주간에 사료내 조단백질은 21.5%, ME 3,100kca1/kg으로 하였으며, 사육 후기 2주간에는 조단백질 19%, ME 3,100kcal/kg 수준으로 급여하였다. 처리구는 실험 1과 2에서 CLA 대두유(Soybean Oil; SBO), 시판용 우지(Commercial Tallow; CT)를 각각 1, 2, 3%와2, 3%씩 기초사료에 첨가 급여하였으며, 전체 540수와 360수를 공시하였다. 조사항목으로 CLA SBO, CT의 MEr, 육계의 증체량, 사료섭취량, 사료요구율, ND 항체가, 가슴육의 지방산 및 CLA 함량을 측정하였다. 본 연구에 이용된 CLA SBO, CT의 MEn는 각각 8,542, 9,179, 8,733 kcal/kg으로 분석되었다. 실험 1에서 첨가된 유지 종류에 따른 증체량의 차이는 보이지 않았으나, 사료요구율은 SBO 급여 구에서 CLA 급여구에 비하여 현저하게 개선되었다(P<0.05). CLA 2와 3% 처리구는 1% 처리구에 비하여 증체 량과 사료섭취 량이 증가하였으며, 사료요구율을 현저하게 개선하였다(P<0.05). 실험 2에서는 CLA급여로 SBO와 CT에 비하여 사육후기의 증체량이 현저하게 높았다(P<0.05). ND 항체가는 CLA와 다른 유지급여구간에 통계적인 차이가 없었다. 계육의 지방산 조성은 사료내 CLA급여수준에 따라서 차이를 보였는데 CLA 1, 2, 3% 급여구에서 CLA 함량은 각각 12.23, 18.74, 25.67mg/g으로 처리구간에 현저한 차이를 나타냈다(P<0.05).본 연구의 결과CLA의 급여는 SBO와 CT에 비하여 증체량을 개선하고 계육내 CLA 함량을 현저히 증가시켰다(P<0.05).

Two experiments were conducted to compare the dietary supplemental influence of conjugated linoleic acid(CLA), soybean oil(SBO) and commercial tallow(CT) on MEn, performance and breast meat composition of broiler chicks. Diets contained 21.5, 19% CP and 3,100, 3,100kcal/kg ME for starter and finisher, respectively. Each three levels(1.0, 2.0, 3.0%) of CLA, SBO, CT were supplemented to basal diets. Five hundred fDrty and three hundred sixty one day old, male broiler chicks were replaced to 3$\times$3, 2$\times$3 factorial design with four replicates in Expt 1 and 2. Weight gain, fled intake, fled conversion, W antibody titer and fatty acid composition were measured. Metabolizable energy(ME) were measured through the metabolic feeding trial in each oil. ME was 8,542, 9,179, 8,733 kcal/kg in CLA, SBO and CT, respectively. In Expt 1, weight gain was not statistically different between dietary oil treatments. Feed intake was significantly increased by CLA supplement(P<0.05). Feed conversion was significantly improved in SBO supplemental groups of all treatments(P<0.05). Weight gain and feed intake were significantly increased and fled conversion was significantly improved in CLA 2% and 3% supplemental groups compared with CLA 1% group(P<0.05). Fatty acid composition of breast meat was changed by CLA supplement. CLA content of breast meat was 12.23, 18.74, 25.67 mg/g in 1, 2, and 3% CLA treatments and showed significant difference between them(P<0.05). In Expt 2, CLA supplements increased weight gain signi(icantly for (inishing period(P<0.05) compared to that of other treatments. There was no significant difference in M Antibody titer in Expt 1 and Expt 2. As the results of these experiments, birds fed CLA tended to gain higher weight and significantly increased CLA contents of breast meat(P<0.05).

키워드

참고문헌

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