Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effect of Dietary Zeolite Treated on the Performance and Carcass Characteristics in Finishing Pigs

사료내 Zeolite 첨가가 비육돈의 생산성과 도체특성에 미치는 영향

  • Kim, J.H. (Korea Applied Microorganism Industrial Research) ;
  • Kim, S.C. (College of Agriculture and Life Science, Gyeongsang National University) ;
  • Ko, Y.D. (College of Agriculture and Life Science, Gyeongsang National University)
  • 김재황 (한국응용미생물산업연구소) ;
  • 김삼철 (경상대학교 응용생명과학부) ;
  • 고영두 (경상대학교 응용생명과학부)
  • Published : 2005.08.31
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Abstract

This study was conducted to investigate the effect of dietary supplementation of zeolite on growth performance, carcass characteristics and fecal ammonia gas release in the finishing pigs. A total of 120 crossbred finishing pigs (50.2$\pm$1.4kg, Landrace$\time$Yorkshire$\time$Duroc) were assigned to 4 treatments and randomly divided into 12 groups. They were divided between early finishing period (50~80kg) and late finishing period (80-120kg). Finishing pigs were fed on a basal diet supplemented with 0, 1, 2 and 4% levels of zeolite. Average daily gain and feed conversion were significantly (P<0.05) improved by the dietary supplementation of 4% zeolite compared with other treatments during overall period. In the finishing periods, ammonia gas emission was reduced (P<0.05) in 4% zeolite treatment more than that of the other treatments. Carcass weight and back fat thicknesses were not affected by zeolite treatments. But, the appearance of A grade pork was increased by the dietary supplementation of 4% zeolite. Feed cost was linearly decreased by increasing the supplementation of zeolite. According to this study, 4% supplement of zeolite is suitable for the improvement of carcass quality and feed conversion, the reduction of fecal ammonia gas emission and feed cost per body weight gain.

본 연구는 비육돈에 대한 황토의 주성분인 zeolite의 첨가효과를 구명하기 위하여 증체량, 사료요구율, 육질, 악취제거 및 경제성 등을 조사하였으며 생후 93일령의 비육돈 120두(4처리$\time$3반복$\time$10두)를 공시하여 출하시까지 70일간 사양시험을 실시하였다. 일당증체량은 비육돈 전기의 경우 zeolite 4% 첨가구가 1.00kg으로서 대조구의 0.8kg에 비하여 약 25%로 크게 향상되었다(P<0.05). 그러나 비육돈 후기의 일당 증체량은 대조구(0.78kg)를 포함한 모든 처리구에서 0.74-0.83kg으로서 유의한 차이는 없었다. 사료요구율은 시험 전기간 동안 대조구에서는 3.43으로서 가장 높았으며, 그 다음은 zeolite 1%구와 2%로서 각각 3.24와 3.13이었으며 zeolite 3% 첨가구는 3.00으로서 약 7.4%의 개선효과가 나타났다(P<0.05). 시험 전기간 동안의 $NH_3$ 가스 발생량은 zeolite 4% 첨가구가 대조구에 비하여 약 33.9-53.9%의 개선효과가 나타났다(P<0.05). 도체중과 등지방 두께는 대조구와 zeolite 첨가구 간에 차이가 없었으며, A등급 출현율은 zeolite 4% 첨가구가 60.00%로서 대조구의 36.67%에 비하여 높게 나타났다. 경제성 분석 결과, 증체 kg당 사료비는 zeolite 4% 첨가구는 910원, 2% 첨가구는 919원, 1% 첨가구는 941원 및 대조구는 982원으로서 zeolite를 4% 첨가함으로써 개선효과가 크게 나타났다. 이상의 결과, 비육돈에 대하여 zeolite를 4% 수준으로 첨가․급여하면 사료요구율, 육질 A등급 출현율, 분내 암모니아가스 발생량 및 경제성면에서 효과적인 것으로 사료된다.

Keywords

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