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셀레늄함유 청보리 사일리지급여가 육성기 거세한우의 생산성 및 혈액성상에 미치는 영향

Influences of Feeding Seleniferous Whole Crop Barley Silage on Growth Performance and Blood Characteristics in Growing Hanwoo Steers

  • Kim, Guk-Won (Department of Animal Resources Science, Daegu University) ;
  • Jo, Ik-Hwan (Department of Animal Resources Science, Daegu University) ;
  • HwangBo, Soon (Department of Animal Resources Science, 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)
  • 투고 : 2012.05.30
  • 심사 : 2012.06.12
  • 발행 : 2012.06.30

초록

본 연구는 다양한 수준의 셀레늄함유 청보리 사일리지를 육성기 거세한우에 급여 시 성장특성 및 혈액성상에 미치는 영향을 조사하였다. 시험은 육성기 거세한우 20두 (개시체중 $208.8{\pm}17.9$ kg)를 공시하였고, 처리구는 셀레늄수준과 형태에 따라 4처리구 (셀레늄시비 및 비시비 청보리 사일리지이용 0.1 mg/kg 셀레늄 (대조구), 0.3 mg/kg 셀레늄 (T1), 0.9 mg/kg 셀레늄(T2) 및 무기셀레늄 0.9 mg/kg 셀레늄 (T3)로 나누어 처리구당 5두씩 배치하여, 90일간 사양시험을 실시하였다. 각 시험사료는 셀레늄함유 및 일반 청보리를 조합하여 배합비의 30%를 대체하였고, 무기셀레늄구 (T3)는 대조구사료에 0.9 mg/kg의 셀레늄수준에 상응하는 양의 sodium selenite를 첨가하였다. 사료내 조단백질 및 에너지함량은 처리구간 동일하였다. 사료 내 셀레늄의 수준 및 급여형태에 따라 사료섭취량과 증체에는 영향을 미치지 않았고, 혈중 포도당 농도는 대조구가 T1과 T2구 보다 유의하게 낮았다 (p<0.05). 혈중 총지질농도는 셀레늄수준이 증가할수록 유의하게 낮아져, T2구와 T3구가 대조구 보다 유의하게 낮았다 (p<0.05). LDL-콜레스테롤은 셀레늄급여구가 대조구보다 유의하게 낮았다 (p<0.05). 혈중 중성지방 또한 T2구가 대조구보다 유의하게 낮았다 (p<0.05). 혈중 면역글로불린농도는 셀레늄의 급여로 전반적으로 상승하는 경향을 보였고, 사료 내 같은 셀레늄수준에서 T3구보다는 T2구가 높은 양상을 나타내었다. 혈중 셀레늄농도는 셀레늄함유 청보리 급여수준이 높아짐에 따라 유의하게 증가였으나 (p<0.05), T3구는 대조구와 유의한 차이가 나타나지 않았다. 이상의 결과에서 육성한우에 대한 셀레늄함유 청보리급여는 육성우의 당 및 지질대사에 관여하는 것으로 나타났고, 특히 혈중 총지질 및 LDL-콜레스테롤의 농도를 감소시켰다. 또한 무기셀레늄보다는 청보리 내 존재하는 셀레늄이 장관내에서 더 잘 흡수되는 것으로 나타났고, 이는 육성기 및 어린 성장단계에 있는 거세한우의 면역력을 향상시키는데 도움이 될 수 있을 것으로 판단된다.

과제정보

연구 과제 주관 기관 : 농촌진흥청

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피인용 문헌

  1. Effect of Seleniferous Whole Crop Barley Silage on Growth Performance, Blood and Carcass Characteristics, and Tissue Selenium Deposition in Finishing Hanwoo Steers vol.33, pp.4, 2013, https://doi.org/10.5333/KGFS.2013.33.4.281