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Research fecal metabolite according to fed different ratios of roughage to concentrate on lactating cow using 1H-NMR analysis

조사료와 농후사료 급여비율에 따른 젖소 우분의 대사체 탐색

  • Kim, Hyun Sang (Division of Applied Life Science(BK21Plus), Gyeongsang National University) ;
  • Lee, Shin Ja (Institue of Agriculture and Life Science & University-Centered Labs, Gyeongsang National University) ;
  • Eom, Jun Sik (Division of Applied Life Science(BK21Plus), Gyeongsang National University) ;
  • Lee, Sung Sill (Division of Applied Life Science(BK21Plus), Gyeongsang National University)
  • 김현상 (경상대학교 응용생명과학부(BK21Plus)) ;
  • 이신자 (경상대학교 농업생명과학연구원(중점연구소)) ;
  • 엄준식 (경상대학교 응용생명과학부(BK21Plus)) ;
  • 이성실 (경상대학교 응용생명과학부(BK21Plus))
  • Received : 2019.11.01
  • Accepted : 2020.02.07
  • Published : 2020.02.29

Abstract

This study examined the metabolites in different roughage to concentrate ratios using proton nuclear magnetic resonance spectroscopy (1H-NMR). Six lactating cows were divided into two groups that were fed different roughage to concentrate ratios (HR group = 8:2, HC group = 2:8). Feces samples were collected individually at one time, and the metabolites were analyzed using an SPE-800 MHz NMR-MS system. The metabolites were identified and quantified using a Chenomx NMR suite 8.4. Metabolic pathway analysis and principal component analysis were conducted using a Metaboanalyst 4.0. Statistical analysis was performed using a Dunnett's test on the SAS program. As a result, several metabolites were identified, and among them, 77 metabolites were used in statistical analysis. The levels of twelve metabolites were significantly higher in the HC group: succinate, dimethylamine, histamine, homovanillate, thymol, acetate, propionate, butyrate, isovalerate, valerate, imidazole, N-nitrosodimethylamine, and O-acetylcholine. In the HC group, the concentrations of all metabolites were higher than in the HR group, and the metabolic pathway was also different. This study is expected to be useful for a variety of livestock studies by 1H-NMR because it examined the change in metabolites in the body metabolism and microorganisms.

이 연구는 급여하는 조사료와 농후사료 비율을 달리하였을 때, 우분 내 대사체 비교를 핵자기공명장치로 확인하기 위해 실시되었다. 착유중인 젖소 6마리를 두 그룹으로 나누어 조사료와 농후사료 급여 비율(HR 그룹=8:2, HC 그룹=2:8)을 달리 하였다. 우분은 직장을 통해 마리별 1회 채취 하였으며 대사체 분석은 SPE-800 MHz NMR-MS system을 이용하였다. 대사체의 정성 및 정량은 Chenomx NMR suite 8.4을 이용하였으며, 확인된 대사체들을 Metaboanalyst 4.0을 이용하여 다변량 분석, 대사경로 분석을 진행하였다. 통계분석은 SAS program을 이용하여 Dunnett's test로 그룹 간 대사체 평균값을 비교 하였다. 분석 결과, 다변량 분석에서는 그룹간의 분리가 확인 되었으며 확인된 대사체 중 통계분석에는 77개의 대사체가 이용되었다. HC 그룹에서 유의적으로 높았던 대사체는 succinate를 포함한 dimethylamine, histamine, homovanillate, thymol, acetate, propionate, butyrate, isovalerate, valerate, imidazole, N-Nitrosodimethylamine 그리고 O-Acetylcholine 이다. HC 그룹에서 분석된 대사체들의 평균 농도가 HR 그룹에 비해 높았으며, 분석된 대사경로 또한 HR 그룹에 비해 다양했다. 연구결과, 핵자기공명분광장치를 통해 분석한 우분 내 대사체는 장내 미생물 뿐 만 아니라 체내 대사 그리고 향후 축산 관련 다양한 연구에 유용하게 사용될 것으로 사료된다.

Keywords

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