Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effects of Feeding System and NDF Level on Blood Metabolism of Growing Cows

사양체계 및 NDF 급여 수준이 번식용 육성우의 혈중 대사물질 변화에 미치는 영향

  • Park, Byung Ki (Nonghyup Feed Co. LTD.) ;
  • Ahn, Jun Sang (Hanwoo Research Institute, National Institute of Animal Science, RDA) ;
  • Woo, Jong Min (Division of Animal Resource Science, Kangwon National University) ;
  • Kim, Min Ji (Division of Animal Resource Science, Kangwon National University) ;
  • Son, Gi Hwal (Division of Animal Resource Science, Kangwon National University) ;
  • Cho, Sang Rae (Hanwoo Research Institute, National Institute of Animal Science, RDA) ;
  • Kim, Byong Wan (Division of Animal Resource Science, Kangwon National University) ;
  • Kwon, Eung Gi (Hanwoo Research Institute, National Institute of Animal Science, RDA) ;
  • Shin, Jong Suh (Division of Animal Resource Science, Kangwon National University)
  • 박병기 (농협사료) ;
  • 안준상 (국립축산과학원 한우연구소) ;
  • 우종민 (강원대학교 동물생명과학대학) ;
  • 김민지 (강원대학교 동물생명과학대학) ;
  • 손기활 (강원대학교 동물생명과학대학) ;
  • 조상래 (국립축산과학원 한우연구소) ;
  • 김병완 (강원대학교 동물생명과학대학) ;
  • 권응기 (국립축산과학원 한우연구소) ;
  • 신종서 (강원대학교 동물생명과학대학)
  • Received : 2018.11.07
  • Accepted : 2018.11.26
  • Published : 2018.12.31
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Abstract

This study was conducted to investigate the effects of feeding system and NDF levels of TMR on blood metabolites in Holstein heifers. Fifty heifers were assigned to one of five treatments according to feed type and level of NDF: TMR (total mixed ration), CON (concentration + mixed forage), T1 (${\geq}53%$ NDF), T2 (50~53% NDF), and T3 (${\leq}50%$ NDF). Although GLU concentrate was not effected by feed type, increased significantly as the level of NDF decreased. There was no effect on concentrate of blood metabolite related with protein. As the level of NDF decreased, the blood ALB concentration was increased (p<0.05). The concentration of blood CHOL was higher in CON than those of TMR (p<0.05), and increased as the level of NDF decreased. The concentration of blood lipid was higher in CON than those of TMR and increased at lower level of NDF. The concentration of blood ALT were significantly lower in T3 than T1 and T2 (p<0.05). Thus, the results of this study suggest that the feeding system and NDF level may affect the blood metabolite concentration; however, the feed intake and other nutrient levels should also be considered.

본 연구는 사양체계 및 TMR의 NDF 수준이 번식용 젖소 육성우의 혈중 대사물질 농도 변화에 미치는 영향을 검토하고, 에너지, 단백질, 지질 및 간 기능 관련 지표 대사물질의 농도를 토대로 영양 상태를 관리하기 위한 기초자료를 제공하기 위해 수행되었다. 공시동물은 번식용 젖소 육성우 50두를 공시하였으며, 시험구 배치는 사양체계에 따라 TMR 처리구(TMR) 및 배합사료 + 혼합 조사료 처리구(CON)의 2처리로 하였으며, TMR의 NDF 수준에 따라 53% 이상(T1), 50 ~ 53%(T2) 및 50% 이하(T3)로 3처리 하였다. 혈중 GLU 농도는 사양체계에 영향을 받지 않았지만, NDF 수준이 감소될수록 유의적으로 증가하였다(p<0.05). 사양체계가 혈중 단백질 관련 대사물질 농도에 미치는 영향은 없었으며, NDF 수준이 낮아질수록 혈중 ALB 농도가 증가되는 결과를 보였다(p<0.05). 혈중 CHOL 농도는 TMR 보다 CON 처리구에서 높았으며(p<0.05), NDF 수준이 낮을수록 증가되는 결과가 나타났다. 혈중 지질 농도는 TMR 보다 CON에서 높았으며, NDF 수준이 낮아질수록 높게 나타났다. 혈중 ALT 농도는 T3구가 T1 및 T2구에 비해 유의적으로 낮게 나타났다(p<0.05). 따라서 본 연구의 결과에서 사양체계 및 TMR의 NDF 수준은 번식용 젖소 육성우의 혈중 대사물질 농도 변화에 영향을 미칠 수 있지만, 사료섭취량 및 영양성분 수준을 고려할 필요가 있을 것으로 판단된다.

Keywords

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