Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Influences of Feeding Seleniferous Whole Crop Barley on Growth Performance, Blood and Carcass Characteristics, and Tissue Selenium Deposition in Finishing Barrows

셀레늄함유 청보리 급여가 거세비육돈의 생산성, 혈액 및 도체특성, 조직 내 셀레늄 축적에 미치는 영향

  • HwangBo, Soon (Department of Animal Resources, Daegu University) ;
  • Jo, Ik Hwan (Department of Animal Resources, Daegu University) ;
  • Kim, Guk Won (Department of Animal Resources, Daegu University) ;
  • Choi, Chang Weon (Department of Animal Resources, Daegu University) ;
  • Lee, Sung Hoon (Gyeongsangnamdo Livestock Promotion Research Institute) ;
  • Han, Ouk Kyu (National Institute of Crop Science, Rural Development Administration) ;
  • Park, Tae Il (National Institute of Crop Science, Rural Development Administration) ;
  • Choi, In Bae (National Institute of Crop Science, Rural Development Administration)
  • 황보순 (대구대학교 동물자원학과) ;
  • 조익환 (대구대학교 동물자원학과) ;
  • 김국원 (대구대학교 동물자원학과) ;
  • 최창원 (대구대학교 동물자원학과) ;
  • 이성훈 (경상남도 축산진흥연구소) ;
  • 한옥규 (농촌진흥청 국립식량과학원) ;
  • 박태일 (농촌진흥청 국립식량과학원) ;
  • 최인배 (농촌진흥청 국립식량과학원)
  • Received : 2012.07.03
  • Accepted : 2012.11.21
  • Published : 2012.12.31
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Abstract

The present study has been conducted to investigate the effects of feeding seleniferous whole crop barley (WCB) to finishing pigs on their growth performance, blood and carcass characteristics as well as on tissue selenium deposition. A total of 40 cross-bred barrows ((Landrace${\times}$Yorkshire)${\times}$Duroc) were allotted to five replicates of four treatments. Each replicate was arranged to 2 pigs per pen; the experimental period lasted for 6 weeks. The finishing pigs were fed diets containing 0.1 (non-seleniferous WCB as a control), 0.2, 0.4 and 0.6 ppm of selenium (Se) by supplementing the diets with seleniferous WCB. The isonitrogenous and isocaloric diets containing 5% non-seleniferous or seleniferous WCB were formulated. Feeding seleniferous WCB did not affect (p<0.05) the feed intake and BW gain. Total blood lipid concentration was significantly (p<0.05) decreased with increasing Se levels. Total blood cholesterol concentration for the control was significantly (p<0.05) higher than that for 0.4 and 0.6 ppm of Se treatments. Increasing the Se levels in WCB significantly (p<0.05) decreased blood triglyceride concentration; however, the levels increased immunoglobulin G and selenium concentrations. Feeding seleniferous WCB did not affect the carcass rate, backfat thickness and meat quality as well as yield grades. The Se concentration in the kidney, liver and loin were significantly (p<0.05) increased with increasing levels of seleniferous WCB. The results indicated that feeding seleniferous WCB may improve the blood characteristics related to lipid metabolism and thus, could produce selenium-fortified pork. Moreover, it is shown that the dietary optimal selenium level to depose selenium in porcine tissues by utilizing seleniferous WCB would be 0.4 mg of Se/kg of ration. Moreover, when 100 g of pork produced from pigs raised under such condition is served to consumers, it meets the minimum recommended daily requirements (40 ${\mu}g$) of dietary selenium proposed by the World Health Organization (1996).

본 연구는 증가하는 수준의 셀레늄함유 청보리 사료를 비육돈에 급여 시 비육돈의 생산성, 혈액성상, 도체형질 및 조직 내 셀레늄함량에 미치는 영향을 조사하였다. 시험은 거세비육돈 40두를 공시하였고, 처리구는 셀레늄 수준에 따라 4처리구(0.1 ppm(대조구), 0.2 ppm, 0.4 ppm, 0.6 ppm)로 나누어 처리구당 5 pen씩, pen당 2두씩 배치하여, 6주간 사양시험을 실시하였다. 각 시험사료는 셀레늄 함유 및 셀레늄무시비 관행 청보리를 조합하여 배합비의 5%를 배합하였고, 조단백질 및 가소화에너지 함량은 처리구 간 유사하도록 배합하였다. 실험사료 내에 셀레늄함유 청보리의 수준증가는 사료섭취량과 증체에 영향을 미치지 않았고, 혈중 총지질 농도는 셀레늄 수준이 증가할수록 유의하게 낮아졌으며(p<0.05), 혈중 총콜레스테롤은 대조구가 0.4와 0.6 ppm 셀레늄 시험구보다 유의하게 높았다(p<0.05). 혈중 중성지방농도는 사료내 셀레늄수준이 증가함에 따라 유의하게 낮아졌고(p<0.05). 혈중 면역글로블린 G와 셀레늄 농도는 사료 내 셀레늄수준이 증가함에 따라 유의적으로 증가하였다(p<0.05). 도체율, 등지방 두께, 육량 및 육질등급은 셀레늄급여로 인한 효과가 나타나지 않았다. 신장, 간장 및 등심 내 셀레늄함량은 사료 내 셀레늄함유 청보리 급여수준이 증가함에 따라 유의하게 직선적으로 증가하였다. 이상의 결과에서 셀레늄함유 청보리급여는 비육돈의 지질대사관련 혈액성상을 개선시켰고, 셀레늄강화 돈육의 생산이 가능하였다. 본 연구에서 조직 내 셀레늄수준을 강화시키기 위한 사료내 적정셀레늄수준은 0.4 ppm인 것으로 나타났고, 생산된 돈육 등심 100 g이 소비자에게 제공되었을 때, 세계보건기구(WHO, 1996)에서 제안한 성인기준 1일 최소셀레늄권장량(40 ${\mu}g$)이 충족되는 것으로 나타났다.

Keywords

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