Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Effects of Tethering and Loose Housing on the Meat Quality of Hanwoo Bulls

  • Lee, Sung Ki (Dept. of Animal Products and Food Science, Kangwon National University) ;
  • Panjono, Panjono (Dept. of Animal Products and Food Science, Kangwon National University) ;
  • Kang, Sun Moon (Dept. of Animal Products and Food Science, Kangwon National University) ;
  • Jung, Youn Bok (Animal Products Grading Service) ;
  • Kim, Tae Sil (Dept. of Animal Products and Food Science, Kangwon National University) ;
  • Lee, Ik Sun (Dept. of Animal Products and Food Science, Kangwon National University) ;
  • Song, Young Han (Dept. of Animal Resources Science, Kangwon National University) ;
  • Kang, Chang-Gie (Dept. of Animal Products and Food Science, Kangwon National University)
  • Received : 2008.03.06
  • Accepted : 2008.07.09
  • Published : 2008.12.01
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Abstract

This study was carried out to investigate the effects of housing system on the carcass and meat qualities of Hanwoo (Korean cattle) bulls. Fourteen 6 months-old male calves were randomly divided into two groups. The first group was individually tethered using double neck-bar tethers. The second group was collectively loose-housed in the pen. They were raised for 15 months prior to slaughter. At 24 h post-slaughter chilling, the carcasses were weighed and evaluated by official grader for carcass traits. At 48 h post-slaughter chilling, the M. longissimus at the $12-13^{th}$ thoracic vertebra from each carcass was collected and stored at $4{\pm}0.2^{\circ}C$ for 7 days for meat quality analysis. There were no significant differences in dressing percentage and carcass yield index between groups. Meat from loose bulls had lower marbling score (p<0.05) and fat content (p<0.01) but higher PUFA concentration (p<0.001) than that from tethered bulls. There were no significant differences physical and sensory properties, aroma pattern, TBARS value, metmyoglobin concentration and CIE color values during refrigerated storage between groups. Compared to tethering, loose-housing bulls produced lower fat content and healthier meat without different physical properties, acceptability, and lipid and color stabilities.

Keywords

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