Journal of agriculture & life science (농업생명과학연구)

Institute of Agriculture & Life Science, Gyeongsang National University (경상대학교 농업생명과학연구원)
권호 표지

Effect of Backfat Thickness and Carcass Weight On Carcass Quality Grade in Commercial Pigs

돼지의 등지방두께와 도체중이 육질등급에 미치는 영향추정

  • Jo, Hwan (Div. of Appl. Life Sci(Bk21 program), Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Kim, Byeong-Woo (Div. of Appl. Life Sci(Bk21 program), Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Sun, Du-Won (Div. of Appl. Life Sci(Bk21 program), Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Park, Jae-Chan (Div. of Appl. Life Sci(Bk21 program), Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Park, Cheol-Hyeon (Div. of Appl. Life Sci(Bk21 program), Gyeongsang National Univ.(Insti. of Agric. & Life Sci.)) ;
  • Lee, Jung-Gyu (Div. of Appl. Life Sci(Bk21 program), Gyeongsang National Univ.(Insti. of Agric. & Life Sci.))
  • 조환 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원) ;
  • 김병우 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원) ;
  • 선두원 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원) ;
  • 박재찬 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원) ;
  • 박철현 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원) ;
  • 이정규 (경상대학교 응용생명과학부(BK21), 농업생명과학연구원)
  • Received : 2010.03.15
  • Accepted : 2010.06.15
  • Published : 2010.06.30
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Abstract

This study was carried out to investigate the effect of environmental fators on backfat thickness and carcass weight and to investigate the carcass grade frequencies by sex, backfat thickness and carcass weight in commercial pigs. Total 20,450,773 of commercial pigs was used in this study, which were obtained from Korea institute for Animal Product Evaluation (KAPE) from July 1, 2007 to April 30, 2009. The averages of carcass weight and backfat thickness were $20.76{\pm}0.001mm$ and $85.97{\pm}0.002kg$, respectively. Carcass weight and backfat thickness of barrow were $22.55{\pm}0.002mm$ and $86.25{\pm}0.003kg$, respectively, which were significantly higher than those of males and females. The carcass weight and backfat thickness were increased with the slaughter years. In the effects of the season of slaughter, carcass weight was significantly higher in winter ($87.00{\pm}0.007kg$), and the backfat thickness was significantly higher in fall ($19.32{\pm}0.004mm$). In grade frequencies of carcass quality grade in sex, grade frequencies of high grade in barrow was higher than those of female in hot carcass and cold carcass. In grade frequencies of carcass quality grade in carcass weight, grade frequencies of high grade in 84~88kg was higher than the other groups in hot carcass and cold carcass. In grade frequencies of carcass quality grade in backfat thickness, grade frequencies of high grade in 22~24 mm was higher than other groups in hot carcass and cold carcass.

본 연구는 축산물품질평가원에서 제공한 2007년 7월 1일부터 2009년 4월 30일까지의 도체등급판정자료 20,450,773두의 등지방두께, 도체중 및 육질등급 자료를 이용하였으며, 등지방두께와 도체중에 대한 환경효과를 추정하였고, 성별, 등지방두께별, 도체중별 등급출현율을 추정하였다. 조사된 형질의 평균치는 도체중과 등지방두께가 각각 $85.97{\pm}0.002kg$, $20.76{\pm}0.001mm$로 나타났다. 성의 효과에서는 거세돼지의 도체중과 등지방두께가 각각 $86.25{\pm}0.003kg$과 $22.55{\pm}0.002mm$로 나타나, 다른 암퇘지나 수퇘지에 비하여 유의적으로 높게 나타났고, 도축 년도의 효과에서는 년도가 경과함에 따라 도체중과 등지방두께가 증가하는 경향을 나타내었으며, 도축 계절의 효과에서는 도체중의 경우 겨울에 $87.00{\pm}0.007kg$으로 유의적으로 무겁게 나타났고, 등지방두께의 경우 가을에 $19.32{\pm}0.004mm$로 유의적으로 두껍게 나타났다. 성에 대한 육질등급 출현율의 경우 온도체와 냉도체 모두 거세돼지의 상위등급 출현율이 암퇘지에 비하여 높게 나타났다. 도체중에 대한 육질등급 출현율의 경우, 온도체와 냉도체 모두 84~88 kg 그룹에서 상위등급 출현율이 다른 그룹에 비하여 높게 나타났다. 등지방 두께에 대한 육질등급 출현율의 경우 온도체와 냉도체 모두 22~24 mm 그룹에서 상위등급 출현율이 다른 그룹에 비하여 높게 나타났다.

Keywords

Acknowledgement

Supported by : 농림수산식품부

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