Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Effects of Dietary Non-Specific Immuno-Stimulator(NIS) on Growth Performance and Carcass Characteristics in Finishing Pigs

비육돈 사료내 비특이성 면역증강제(NIS)의 급여가 성장 및 도체특성에 미치는 영향

  • 권오석 (단국대학교 동물자원과학과) ;
  • 김인호 (단국대학교 동물자원과학) ;
  • 홍종욱 (단국대학교 동물자원과학) ;
  • 김지훈 ((주)애그리브랜드 퓨리나코리) ;
  • 민병준 (단국대학교 동물자원과학) ;
  • 이원백 (단국대학교 동물자원과학) ;
  • 손경승 (단국대학교 동물자원과학과)
  • Published : 2004.03.01
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Abstract

This study was conducted to evaluate the effects of non-specific immuno-stimulator(NIS) supplementation on growth performance and carcass characteristics in finishing pigs. A total of eighty[Duroc${\times}$Yorkshir${\times}$Landrace] pigs(60.55${\pm}$3.72 kg in average initial body weight) were used for a 9-week assay. Dietary treatments included as follows 1) CON(basal diet), 2) NIS1(basal diet for 6 weeks and 0.05% NIS for 3 weeks), 3) NIS2(basal diet for 3 weeks and 0.05% NIS for 6 weeks) and 4) NIS3(0.05% NIS for 9 weeks). Average daily gain during the feeding period was not significantly different among the treatments (p>0.05). However, average daily feed intake was higher in NIS2 than CON(p<0.05). Backfat thickness did not differ among the treatments(p>0.05). The appearance rate of A or B carcass grade was much higher in NIS1 (58%) and NIS3 (75%) than CON(50%) and NIS2(50%). L＊(lightness) value of loin was higher in NIS1 and NIS3 than CON and NIS2. However, there was no effect by dietary NIS(p>0.05). Although a＊(redness) value of loin was lower in CON than other treatments, there was no significant difference among the treatments(p>0.05). No remarkable differences were found in sensory properties(marbling, firmness and color) among the treatments. The results from the present study suggest that NIS could be an effective feed additive to improve pork quality. However, further research is needed to investigate effect of carcass characteristics.

본 연구는 비육돈 사료내 비특이성 면역증진 효과를 가지는 물질(NIS)의 첨가가 성장 및 육질에 미치는 효과를 알아보고자 실시하였다. 3원 교잡종(Duroc${\times}$Yorkshire${\times}$Landrace) 비육돈 80두를 공시하였으며 시험개시시의 체중은 60.55$\pm$3.72kg이었다. 시험설계는 옥수수-대두박 위주의 사료를 9주 동안 급여한 처리구(CON: 대조구), 대조구 사료를 6주 급여 후 NIS 0.05% 첨가한 사료를 3주 급여한 처리구(NIS1), 대조구 사료를 3주 급여후 NIS 0.05% 첨가한 사료를 6주 급여한 처리구(NIS2), 및 대조구 사료내 NIS 0.05%를 첨가하여 9주간 급여한 처리구(NIS3)로 4개 처리를 하여 처리당 5반복 반복당 4두씩 임의 배치하였다. 증체량은 전 시험기간에서 처리구간의 통계적인 차이를 보이지는 않았으나(p＞0.05), 사료 섭취량에서는 NIS2 처리구가 대조구에 비하여 유의적인 증가를 보였다(p<0.05). 등지방두께에서는 처리구간의 유의적인 차이는 보이지 않았으나 대조구가 NIS를 시기별로 급여한 처리구보다 높게 나타났다(p>0.05). 처리구별 A등급과 B등급의 출현율은 CON이 50%, NIS2은 50%, NIS1는 58% 그리고 NIS3는 75%를 보였다. 등심의 L＊값은 NIS2과 NIS3 처리구가 다른 처리구들에 비해 높게 나타났지만 유의적인 차이를 보이지는 않았다(p>0.05). 또한 적색도를 나타내는 a＊값에서는 NIS처리구가 대조구보다 높게 나타났지만 유의적인 차이는 없었다(p>0.05). 마블링, 단단함 및 육색의 NPPC에 의한 결과에서는 처리구간의 유의적인 차이는 보이지 않았다(p＞0.05). 이상의 결과를 종합하여 볼 때, 사료내 NIS의 첨가는 육질에 영향을 미칠 수 있을 것으로 보이나, 기능성 돈육으로서의 비육돈 자체의 생리활성이나 돈육의 지방산 조성등 육질 평가에 대한 더 많은 연구가 필요하리라 여겨진다.

Keywords

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