한국유기농업학회지 (Korean Journal of Organic Agriculture)

  • 제25권1호
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  • Pages.219-231
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  • 2017
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  • 1229-3571(pISSN)
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  • 2287-819X(eISSN)
한국유기농업학회 (Korean Association of Organic Agriculture)
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지방산 조성 비율이 다른 유기농 사료 급여가 홀스타인 원유의 CLA 및 지방산 함량에 미치는 영양

Effects of Feeding Organic Diets with Different Fatty Acid Composition Ratio on CLA and Fatty Acid Contents in Raw Milk of Holstein-Friesian Dairy Cows

  • 남인식 (한경대학교 고품질친환경축산연구센터) ;
  • 임양천 ((주)오린, 한경대학교 동물생명환경과학과) ;
  • 남기택 (한경대학교 동물생명환경과학과)
  • 투고 : 2017.01.13
  • 심사 : 2017.02.02
  • 발행 : 2017.02.28
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초록

본 연구는 지방산 함량 및 배합사료와 조사료 비율을 기초로 한 유기농 사료 급여가 홀스타인 착유우에서 생산된 원유의 CLA 및 지방산 함량에 미치는 연구를 조사하기 위한 목적으로 실시하였다. 총 290두의 홀스타인 착유우를 산차 및 유량에 따라 3개 group으로 나누었다. 대조구는 C16:00, C18:2 그리고 SFA를 높게 설계하였고, 처리구 1은 C18:1, C18:2 그리고 UFA 함량을 높게 설계하였으며 처리구 2는 MUFA, C18:3 그리고 PUFA 함량을 높게 설계하였다. 결과를 요약하면 다음과 같다. 유기농 원유 내 C16:0 함량은 처리구 2에서 가장 높은 것으로 나타났다(p<0.05). 그 이유는 반추위 내 미생물의 de novo 생합성 때문인 것으로 판단된다. 처리구 2의 C18:0 함량은 7.92%로 대조구(11.39%)와 처리구 1(10.88%)보다 높았다(p<0.05). CLA 함량도 처리구 2가 처리구 1이나 대조구에 비하여 높은 것으로 나타났다(p<0.05). 원유 내에서 검출된 대부분의 CLA는 착유우 유선조직내의 ${\Delta}^9$-desaturase에 의하여 합성된 것으로 판단된다. n-3/n-6 비율도 처리구 2에서 가장 높은 것으로 나타났다(p<0.05). 본 연구 결과를 종합해 보면, 착유우에게 혼합 목건초 등을 급여하면 CLA, n-3 농도는 증가하며 C18:0 농도는 낮아지는 것으로 조사되었다. 본 연구는 유기농 인증된 조사료 및 농후사료를 이용하여 결과를 도출하였다. 그러나 유기농 사료를 사용할 경우에만 원유 내 CLA 및 n-3 농도는 증가한다고 볼 수 없다. 원유 내 고농도의 CLA 및 n-3 지방산 생산을 위해서는 반추위 미생물 및 유선세포의 지방 대사를 통한 CLA 생산 메커니즘에 대한 충분한 이해와 급여 사료 내 지방산 구성 등이 중요한 것으로 판단된다.

The aim of this study was to determine the effects of feeding of different organic diets (based on fatty acid contents) on CLA and fatty acid concentration of raw milk. Total two hundred and ninety Holstein cows were divided into control, treatment 1 and treatment 2 groups according to the parity and milk yield. Control diet was contained higher C16:00, C18:2 and SFA. Treatment 1 diet was higher in C18:1, C18:2, UFA and treatment 2 diet was higher in MUFA and C18:3 and PUFA. The results indicated that the C16:0 concentration in raw milk was greater in the group of treatment 2 than in control and treatment 1 (p<0.05). The concentration of CLA in treatment 2 was higher compared to treatment 1 and control groups (p<0.05). The ration of n-3/n-6 was higher in treatment 2 group compared with control and treatment 1 (p<0.05). In conclusion, feeding 100% of grass feed for dairy cows increases CLA and n-3 content in milk. From now on, basis on our study, development of functional milk will increase a health of children and old people.

키워드

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