title: Effect of mixed hay supplementation during fattening on carcass traits and meat quality of Hanwoo steers.
abstract: BACKGROUND
  This study was aim to observe the effects of feeding mixed local hay (MH) consisted of 55% orchard grass (Dactylis glomerataL.), 35% tall fescue (Festuca arundinacea) and 10% red clover (Trifolium pratense) to Hanwoo steers on performance, carcass characteristics and meat quality (longissimus thoracis) compared with feeding imported timothy hay (TH) and local rice straw (RS).
  
  
  RESULTS
  Although no significant effects were found on animal performance and carcass yield grade, the carcasses of MH group had higher marbling score and quality grade than those of RS and TH group (P< 0.05). Therefore, higher fat content (P< 0.001), lower shear force and hardness value in the beef of MH group than that of other groups were observed. Furthermore, the beef of MH group had higher CIE a* value (redness) than that of other groups and feeding MH to Hanwoo steers lowered n-6 to n-3 fatty acids ratio in beef.
  
  
  CONCLUSIONS
  Mixed hay provided benefits on meat quality and could be used for Hanwoo fattening program.
authors.affiliation: College of Animal Life Sciences, Graduate School, Kangwon National University, Chuncheon, 24341 South Korea.
authors.forename: Dicky Tri
authors.initials: DT
authors.lastname: Utama
authors.affiliation: College of Animal Life Sciences, Graduate School, Kangwon National University, Chuncheon, 24341 South Korea.
authors.forename: Ji Hye
authors.initials: JH
authors.lastname: Choi
authors.affiliation: Gangwon Provincial Livestock Research Center, Hoengseong, 25266 South Korea.
authors.forename: Chang Woo
authors.initials: CW
authors.lastname: Lee
authors.affiliation: Gangwon Provincial Livestock Research Center, Hoengseong, 25266 South Korea.
authors.forename: Yeon Soo
authors.initials: YS
authors.lastname: Park
authors.affiliation: College of Animal Life Sciences, Graduate School, Kangwon National University, Chuncheon, 24341 South Korea.|Animal Products and Food Science Program, Division of Animal Applied Science, College of Animal Life Sciences, Kangwon National University, Chuncheon, 24341 South Korea.
authors.forename: Sung Ki
authors.initials: SK
authors.lastname: Lee
keywords: Beef; Hanwoo; Hay; Meat quality; Orchard grass; Red clover; Straw; Tall fescue; Timothy grass