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Effects of Chromium Picolinate on Growth Performance, Carcass Characteristics and Plasma Components in Holstein Bulls

홀스타인 수소에 있어서 Chromium Picolinate의 첨가가 성장성적, 혈액성상 및 도체품질에 미치는 영향

  • Hong, Z.S. (School of Agricultural Biotechnology, Seoul National University) ;
  • Jin, M.G. (School of Agricultural Biotechnology, Seoul National University) ;
  • Jin, R.H. (School of Agricultural Biotechnology, Seoul National University) ;
  • Han, S.Y. (School of Agricultural Biotechnology, Seoul National University) ;
  • Lee, H.G. (School of Agricultural Biotechnology, Seoul National University) ;
  • Lee, H.J. (National Livestock Research Institute, R.D.A.) ;
  • Choi, Y.J. (School of Agricultural Biotechnology, Seoul National University)
  • 홍중산 (서울대학교 농생명공학부) ;
  • 김명국 (서울대학교 농생명공학부) ;
  • 김윤학 (서울대학교 농생명공학부) ;
  • 한승은 (서울대학교 농생명공학부) ;
  • 이홍구 (서울대학교 농생명공학부) ;
  • 이현준 (축산기술연구소) ;
  • 최윤재 (서울대학교 농생명공학부)
  • Published : 2002.08.31

Abstract

We conducted two experiments to evaluate the effects of chromium picolinate(CrP) on growth performance, carcass characteristics and plasma components in Holstein bulls. In trial Ⅰ, eight finishing Holstein bulls(300${\pm}$6.99Kg) were allocated to 2 treatments(control and 0.05% CrP) with 4 replication for 10-months. In results, growth performance was not affected by CrP addition. The plasma insulin concentration in 0.05% CrP group was about 2 times higher than the control group of Holstein bulls. The levels of plasma NEFA were significantly decreased to 59.00 mEq/dl with 0.05% CrP treatment(P<0.05), but the levels of plasma glucose and PUN were not altered by 0.05% CrP treatment. The grade of carcass was not different between control and 0.05% CrP group, but back fat thickness in 0.05% CrP group was increased in 22.33% compared with control group. In trial 2, fifteen growing- finishing Holstein bulls(160${\pm}$4.63Kg) were allocated to 3 treatments(control, 0.025% CrP and 0.05% CrP) with 5 replication for 14-months. During the overall experimental period, growth performance was not affected by CrP levels. The levels of hormone and metabolites were not affected by CrP supplementa- tion. The carcass characteristics were not different between control and treatment. These results show that the CrP may have no effects for beef cattle production because of degradation of CrP conjugation in the rumen. However treatment of short term provide a possibility the effects of development for lipogenesis.

본 시험은 성장단계별로 서로 다른 수준의 CrP를 첨가하여 성장성적, 혈액성상 및 도체품질에 미치는 영향을 규명하고자 실시하였다. 시험Ⅰ에서 일당증체, 일당건물섭취량 및 사료효율에는 유의적인 차이가 없었다(p>0.05). 혈액성상에서 혈장 Glucose와 PUN의 농도에는 영향이 없었지만 혈중 인슐린의 농도는 0.05% CrP첨가구가 대조구의 2배되는 1.47ng/ml 인데 반하여 혈중 NEFA의 농도는 59.00 mEq/dl 로 유의적으로 낮게 나타났다(p<0.05). 이는 인슐린의 농도의 증가 및 인슐린의 활성의 증가로 인하여 지방합성대사가 활발히 진행된 결과로 사료된다. 이러한 결과를 도체분석결과가 뒤받침 해주고 있는데 비록 통계적인 유의차는 없지만 0.05% CrP 첨가구의 등지방두께가 대조구에 비해 22.33% 높은 3.67cm로 나타났다. 시험Ⅱ에서 비록 일당증체, 일당건물섭취량 및 사료효율에는 유의적인 차이가 없었지만(p>0.05), 첨가초기 즉 0.05% CrP 첨가구에서는 첫 60일간, 0.025% CrP 첨가구에서는 첫 120일간 대조구보다 우수한 성적을 나타냈다. 혈장 Glucose와 PUN의 농도에는 영향이 없었다. 통계적인 유의차는 없었지만 혈 중 인슐린의 농도는 0.025% CrP 첨가구는 대조구보다 8.88% 높은 1.35ng/ml로 나타났고 0.05% CrP 첨가구는 오히려 1.13ng/ml로 대조구보다 낮게 나타났다. NEFA의 농도는 시험Ⅰ에서와 같은 차이는 없었지만 CrP 첨가수준이 증가할수록 감소하는 추세를 나타냈고 등지방두께는 일정한 변화추세를 보이지 않았다.

Keywords

References

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