Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Omega-3 and -9 Fatty Acid Combination Effects on Broiler Chicks to Produce Chicks with High in Omega-3 Polyunsaturated Fatty Acid

오메가-3와 -9 지방산의 혼합 급이가 계육내 오메가-3 계열 다가불포화지방산의 조성에 미치는 영향

  • Shin, Dae-Keun (Swine Science and Technology Center, Gyeongnam National University of Science and Technology) ;
  • Choi, Seung-Ho (Department of Animal Science, 2471 TAMU, Texas A&M University, College Station) ;
  • Cho, Young-Moo (Animal Genetic Resources Station, National Institute of Animal Science, RDA) ;
  • Park, Jae-Hong (Animal Genetic Resources Station, National Institute of Animal Science, RDA)
  • 신대근 (경남과학기술대학교 양돈과학기술센터) ;
  • 최성호 (텍사스 A&M 주립대학교 축산학과) ;
  • 조영무 (국립축산과학원 가축유전자원시험장) ;
  • 박재홍 (국립축산과학원 가축유전자원시험장)
  • Received : 2011.10.04
  • Accepted : 2011.11.22
  • Published : 2012.03.31
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Abstract

To evaluate the effects of n-3 and n-9 fatty acid combination on broiler chicks, diets containing the combinations of five different fat sources including flaxseed oil, fish oil, EPA, DHA and olive oil were provided, and all chicks were processed at 4 weeks of growth. Liver, breast and thigh samples were collected and fatty acid composition and/or CIE $L^*$, $a^*$ and $b^*$ measurement were measured. Also, live chick and liver weights were weighed and the ratio was provided as an evidence of fat accumulation in liver. No significant difference was determined in both live and liver weight ratio and liver color. EPA was low in FHO as compared to livers from others. In contrast, DHA was significantly high in FHO. In broiler breasts derived from FDO, AA and n-3 fatty acid content was high, but only numerical differences of EPA and DHA were determined in breasts from FDO. The thighs from FHO showed high in EPA, DHA and n-3 fatty acid content but had low in AA and n-6 to n-3 ratio. Therefore, the results indicate that broiler chicken diets containing either FDO or FHO may be possible combination diets increasing n-3 polyunsaturated fatty acids in broiler chicks.

본 연구는 오메가-3 다가불포화지방산의 함량을 높인 육계의 생산을 위하여 n-3 지방산과 올리브유를 혼합한 사료[CON(5% 일반지방), FXO(2.5% 아마씨유+ 2.5% 올리브유), FEO(2.45% 아마씨유+ 0.05% EPA + 2.5% 올리브유), FDO(2.45% 아마씨유+ 0.05% DHA + 2.5% 올리브유) 그리고 FHO(2.5% 어유+ 2.5% 올리브유)]를 육계에게 4주 간 급이하였다. 4주간의 사양 후 도계를 통하여 닭의 간, 가슴살 그리고 다리살을 채취하였다. 채취한 간은 간 무게/생체중의 비율, 육색 그리고 지방산의 조성 분석을 위하여 사용되었으며, 닭 가슴살과 다리살은 지방산 함량 분석을 위하여 사용되었다. FHO 사료를 급이한 육계의 간은 EPA가 유의적으로 낮았으나 DPA와 DHA는 높았다(p<0.05). 가슴 근육은 n-6 지방산인 AA와 DPA 그리고 n-3 지방산에서 FDO 처리구가 이외의 처리구 대비 유의적으로 높았으며(p>0.05), 더욱이 유의적인 차이는 나타나지 않았으나 수치적으로 EPA와 DHA 함량 역시 높았다. LNA 함량은 FEO와 FDO 사료를 급이한 닭의 다리 근육에서 유의적으로 높았으며, AA 함량 또한 FHO와 유사하였다. FHO 사료를 급이한 닭의 다리 근육은 EPA, DHA 그리고 n-3 지방산에서 유의적으로 높은 함량을 나타낸 반면에 AA의 함량과 n-6/n-3 지방산의 비율은 유의적으로 낮았다(p<0.05). 따라서 본 실험은, n-3의 다가불포화지방산의 함량을 증가시킴과 동시에 n-6/n-3 비율의 향상을 위해서는 근섬유 조성에 따라 그 접근법이 달라야 된다는 사실이 조사되었으며, 가슴과 다리 근육 내 n-3 지방산의 함량을 증가시키기 위해서는 각각 FDO와 FHO 사료의 급이가 적합할 것으로 판단된다.

Keywords

References

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