Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effects of Different Sources of Dietary Chromium and Copper on Growth Performances, Nutrients Digestibility, Fecal Cr, Cu and Zn Excretion in Growing Pigs

크롬과 구리의 형태별 병용급여가 육성돈의 육성성적, 소화율 및 분의 Cr, Cu, Zn 배출량에 미치는 영향 미치는 영향

  • Park, Jeoung-Keum (Dept. of Feed Science & Technology, Kangwon National University) ;
  • Kim, Jin-Woong (Dept. of Feed Science & Technology, Kangwon National University) ;
  • Yoo, Young-Beom (Dept. of Feed Science & Technology, Kangwon National University) ;
  • Lee, Jun-Yeop (Dept. of Feed Science & Technology, Kangwon National University) ;
  • Ohh, Sang-Jip (Dept. of Feed Science & Technology, Kangwon National University)
  • 박정금 (강원대학교 사료생산공학과) ;
  • 김진웅 (강원대학교 사료생산공학과) ;
  • 유영범 (강원대학교 사료생산공학과) ;
  • 이준엽 (강원대학교 사료생산공학과) ;
  • 오상집 (강원대학교 사료생산공학과)
  • Published : 2008.06.01
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Abstract

This study was carried out to evaluate effects of either organic or inorganic sources of both chromium and copper on growth performances, nutrients digestibility and fecal Cr, Cu, and Zn excretion in growing pigs. A total of 36 growing pigs((Landrace×Yorkshire)×Duroc, weighing 61.2kg in average) were allotted to 4 treatments with 3 replicates and 3 pigs per replicate. Four treatments were designated by supplemental sources of both chromium and copper as follows: ①200ppb Cr as Cr-methionine chelate(CrMet) and 200ppm Cuas copper methionine chelate(CuMet), ②200ppb Cr as CrMet and 200ppm Cu as copper sulfate(CuSO4), ③200ppb Cr as chromium chloride(CrCl3) and 200ppm Cu as CuMet, ④200ppb Cr as CrCl3 and 200ppm Cu as CuSO4. Growth performance was highest(p<0.05) in CrMet and CuMet supplemented diet treatment. Nutrients digestibility of diets was lowest(p<0.05) in CrMet and CuSO4 supplemented diet treatment, and highest(p<0.05) in CrMet and CuMet supplemented diet treatment. Fecal copper, zinc and chromium excretion was highest(p<0.05) in CrCl3 and CuSO4 supplementation treatment and lowest(p<0.05) in CrMet and CuMet supplementation treatment. This study showed a relatively high degree of utilization of Cr and Cu as well as Zn by supplementation of CrMet and CuMet compared with those of the inorganic sources.

Cr 및 Cu의 형태별 병용급여가 육성돈의 육성성적, 영양소 소화율, 분내 광물질 배출량에 미치는 영향을 비교 분석한 결과는 다음과 같다.1.유기태 또는 무기태 형태의 Cr과 Cu를 병용급여한 결과 육성돈의 일당증체량은 CrMet과 CuMet을 첨가한 구에서 높게(p<0.05) 나타나고 사료요구율도 낮았다(p<0.05). 반면에 CrMet과 CuSO4를 병용 첨가한 구에서는 사료섭취량은 낮고(p<0.05) 일당증체량도 낮게(p<0.05) 나타났다.2.영양소 소화율은 CrMet과 CuMet을 병용 첨가한 구에서 영양소 소화율이 높게(p<0.05) 나타났으나, CrMet과 CuSO4를 병용 첨가한 구에서는 낮게(p<0.05) 나타났다. CrCl3 첨가구에서는 CuMet 또는 CuSO4를 병용 첨가하더라도 영양소 소화율에는 유의적인(p>0.05) 차이를 보이지 않았다. 3.광물질 Cu, Zn, Cr의 각각의 분으로의 배출율은 CrMet과 CuMet을 병용 첨가한 구에서 낮았으며(p<0.05), CrCl3와 CuSO4를 병용 첨가한 구에서 높게(p<0.05) 나타났다.이상의 결과를 집약하여 보면 유기태 형태의 병용 첨가구가 무기태 형태 병용 첨가구보다 일당증체량이 높고 사료요구율이 개선되었고, 영양소 소화율도 높게 나타났다. 또한 유기태 형태로 급여한 병용 첨가구가 무기태 형태로 병용 첨가한 구보다 Cu, Zn, Cr의 분으로의 배출율이 낮게 나타났다. 따라서 본 시험에서는 유기태 또는 무기태 Cr과 Cu의 병용첨가는 성장률이나 영양소 소화율에서 교호 및 길항작용 효과가 있는 것으로 판단된다. 또한 유기태 형태의 광물질로 무기태 형태를 대체 급여시 토양에 과다 축적될 경우 환경오염을 일으킬 수 있는 광물질의 배설량을 감소시킬 수 있음을 보여주었다.

Keywords

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