Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Relationship of Slaughter Age and Carcass Traits of Hanwoo Cattle

  • Panjono, Panjono (Department of Animal Products and Food Science, Kangwon National University) ;
  • Kang, Sun-Moon (Department of Animal Products and Food Science, Kangwon National University) ;
  • Lee, Ik-Sun (Department of Animal Products and Food Science, Kangwon National University) ;
  • Kim, Yeong-Jong (Pyoengchang, Yeongwol, Jeongseon Livestock of Cooperation) ;
  • Lee, Sung-Ki (Department of Animal Products and Food Science, Kangwon National University)
  • Published : 2009.10.31
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Abstract

Two experiments were carried out to investigate the relationship of slaughter age and carcass traits of Hanwoo cattle. A total number of 11,284 heads of cattle (4,624 bulls, 6,120 steers, and 540 females) were used in the experiment (Exp.) 1. In the Exp. 2, 3,887 heads of steers slaughtered at age of 24-36 mon were used. After 24 h post-slaughter chilling, the carcasses were weighed and evaluated by an official grader of carcass traits according to the Korean carcass grading standard. Backfat thickness was the main variable in yield index and grade whereas marbling score was the main variable in carcass quality grade. Meat color was an important factor affecting carcass quality grade of bulls; fat color was an important factor affecting those of steers and females; and maturity was an important factor affecting that of females. After 24-mon-old, extension of slaughter age did not automatically increase the quantity and quality of meat. However, 29 mon of age can be regarded as the optimum time to slaughter steers to attain the highest take home money for farmers.

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References

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