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Effect of Transport Time on the Blood Profile and Meat Quility of Slaughter Pigs

수송시간이 돼지의 혈액성상과 육질에 미치는 영향

  • Lee, J.R. (Gyeongnam Province Advanced Swine Research Institute) ;
  • Seo, J.T. (Pusankyungnam Pigfarmers Co-operative) ;
  • Hur, T.Y. (National Livestock Research Institute) ;
  • Jung, J.D. (Gyeongnam Province Advanced Swine Research Institute) ;
  • Hah, Y.J. (Gyeongnam Province Advanced Swine Research Institute) ;
  • Lee, J.W. (Gyeongnam Province Advanced Swine Research Institute) ;
  • Lee, J.I. (Gyeongnam Province Advanced Swine Research Institute) ;
  • Lee, J.D. (Gyeongnam Province Advanced Swine Research Institute)
  • 이제룡 (경상남도 첨단양돈연구소) ;
  • 서종태 (부산경남양돈조합) ;
  • 허태영 (축산기술연구소) ;
  • 정재두 (경상남도 첨단양돈연구소) ;
  • 하영주 (경상남도 첨단양돈연구소) ;
  • 이진우 (경상남도 첨단양돈연구소) ;
  • 이정일 (경상남도 첨단양돈연구소) ;
  • 이중동 (경상남도 첨단양돈연구소)
  • Published : 2003.10.31

Abstract

In a trial involving 120 pigs, the effects of transport time on blood profile and meat quality in pigs were investigated. One group of 60 animals was subjected to 20 min and the others to 2 h transport time, and held in lairage for 1 h 30 min. There was not significantly different in the carcass weight, backfat thickness and carcass grade between groups. Cortisol and lactic dehydrogenase(LDH) concentrations were significantly(P〈0.05) higher in the group transported for 2 h compared with the group transported for 20 min. There was not significantly different(P〉0.05) in meat quality(pH$_1$, pH$_{u}$, drip loss, cooking loss, hardness, CIE L$^{*}$, a$^{*}$, b$^{*}$ and NPPC) and skin damage of pork carcass between groups. These results imply that the stress could be affected by transport time in transit without meat quality.

여름철 수송시간이 돼지의 혈액성상 및 돈육품질에 미치는 영향을 구명하고자, 생체중 110kg 내외의 비육돈 120두를 공시하여 실험하였다. 수송시간은 농가에서 도축장까지 20분과 2시간으로 하였고 계류는 약 1시간 30분 실시하였다. 돼지 혈액은 도축장 하차직후 채취하였다. 관행적인 방법으로 도축 후 도체특성을 조사하였다. 도축 1시간 후 pH$_1$과 도체의 피부손상을 측정한 후, 도체를 냉각시키고 사후 24시간에 최종 pH$_{u}$ 및 돈육품질을 조사하였다. 20분과 2시간 수송사이 도체중, 등지방두께 및 도체등급은 차이를 나타내지 않았다. 돼지의 심리적 스트레스 수준을 측정하는 Cortisol과 물리적 스트레스 수준은 측정하는 LDH는 2시간 수송이 20분 수송에 비해 유의하게(P〈0.05) 높게 나타났다. 돈육의 이화학적 특성 중 pH$_{u}$는 20분 수송이 높은 경향을 나타냈고, 가열 감량, 육즙 감량 및 경도는 차이를 나타내지 않았다. CIE L$^{*}$, a$^{*}$ b$^{*}$와 주관적인 육색인 NPPC에도 수송시간에 의해 영향을 받지 않았고 또한 도체의 피부손상도 차이가 인정되지 않았다. 이상의 결과, 돈육품질은 현저한 차이를 보이지 않았지만 2시간 수송한 돼지가 스트레스를 많이 받는 것으로 나타났다.

Keywords

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