돼지도체 등급판정기준 육색등급과 기계적 측정값간의 상관관계
The Relationship Between Carcass Color Grade and Instrumental Values in Pork Loin
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본 연구의 목적은 축산물품질평가원의 돼지도체 등급 세부기준 중 육색등급과 일반적인 기계적 육색측정치와의 상관관계를 알아보기 위한 것인데, 총 538두의 돼지를 도축장에서 도축하여 등급판정 부위인 배최장근(longissimus dorsi)에서 육색등급과 색차계를 이용한 기계적 육색값(L*, a*, b*, ∆C and H)을 측정하였다. 기계적 육색측정항목은 모두 육색 등급이 높아질수록 낮아지는 경향을 나타내었는데(p<0.05), 특히 명도(L* value)는 육색 1등급에서 65.23으로 가장 높은 값을 나타내었고, 육색 6등급에서는 45.29로 가장 낮은 값을 나타내었다(p<0.05). 한편 모든 기계적 육색측정치는 축산물품질평가원 기준 육색등급과 부의 상관관계(p<0.001)를 나타내었는데, 특히 명도는 r-value가 -0.83으로 높은 상관관계를 보였다. 따라서 기계적 육색측정치는 축산물품질평가원 기준 육색등급과 매우 밀접한 상관관계가 있으며, 특히 명도는 돼지도체의 등급판정과 육색등급판정에 있어서 유용한 참고항목이 될 것으로 사료된다.
Abstract
The objective of this study was to investigate the relationship between color grade in Korea Institute for Animal Products Quality Evaluation (KAPE) and instrumental color values (L*, a*, b*, ∆C and H) in porcine longissimus dorsi muscle. A total of 538 pigs were selected to classify and to measure the instrumental color values from commercial public slaughter house. All of the instrumental color traits were decreased with increase of color grade (p<0.05). The color grade 1 group had the highest L* value (65.23) and the color grade 6 group had the lowest L* value (45.29) among the color grade groups (p<0.05). The color grade had the negative correlation with all the instrumental color traits (p<0.001) and the correlation coefficient between color grade and L* value was -0.83. In conclusion, instrumental color traits is highly related to color grade, and especially L* value is an important indicator for both porcine carcass grading and color grading systems in KAPE.
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