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Comparison of Chemical Composition and Immune-enhancing Activity of the Four Lines of Korean Native Chickens

4계통 재래종 닭고기의 화학적 특성 및 면역활성

  • Received : 2016.05.25
  • Accepted : 2016.08.17
  • Published : 2016.09.30

Abstract

This study was conducted to compare the general composition and immunomodulatory activity of breast and thigh meats from four lines of Korean native chickens: Yeonsan Ogye, Hyunin Black, Hwangbong, and Hoengseong Yakdak. White Leghorn was used as a control. Fifteen male chickens (three chickens in each line) were grown under the same conditions and slaughtered at 13 weeks old. The four lines of Korean native chickens, regardless of the part, had higher contents of crude fat (p<0.05) than White Leghorn. The cholesterol contents were significantly higher in Hyunin Black and significantly lower in Hoengseong Yakdak than those of other chickens (p<0.05). The immunomodulatory effect, assessed by macrophage cell proliferation and nitric oxide production, was only observed in the breast meat of the four lines of Korean native chickens. The phagocytic activity of macrophage cells was significantly augmented by the breast meat of Hyunin Black and Hoengseong Yakdak. Furthermore, the mRNA expressions of pro-inflammatory cytokines, such as IL-4, IL-10 and $IFN-{\gamma}$, was significantly suppressed by Korean native chickens compared with White Leghorn. These results suggested that the four lines of Korean native chickens exhibited greater immune-enhancing activity than White Leghorn.

본 연구는 4종의 재래닭인 연산오계, 현인흑계, 횡성약닭, 황봉의 일반성분, 카르노신, 안세린 함량 및 면역활성을 비교하기 위하여 실시하였고, 대조구로 백색 레그혼을 사용하였다. 시험용 닭을 모두 동일한 조건에서 13주간 사육하여 도계한 후 화학적 성분조사를 실시하였다. 일반성분 분석에서는 4종의 재래닭이 백색레그혼에 비하여 조지방 함량이 높았으며, 콜레스테롤 함량은 현인흑계가 다른 품종에 비하여 높았고 횡성약닭이 유의적으로 낮았다(p<0.05). 면역증진 효능을 측정하기 위하여 대식세포를 이용하여 실험한 결과는 재래닭 4종의 가슴육에서만 대식세포 증식 및 NO 억제 효능이 있었다. 대식세포 탐식작용은 현인흑계와 횡성약닭가슴육에서 유의적으로 증가되었고, 염증 관련 사이토카인(IL-4, IL-10, $IFN-{\gamma}$) 유전자 발현은 백색레그혼에 비하여 4종의 재래닭에서 억제효과가 컸다. 결론적으로 4종류의 재래닭이 백색레그혼에 비하여 면역증진 효능이 높았으며, 특히 가슴육에서 효능이 있었다. 재래닭 품종 간에도 일반성분 및 면역조절능에 차이가 있는 것으로 나타났다.

Keywords

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