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Effect of Whole Crop Barley Silage Feeding on the Growth Performance, Feed Requirement and Meat Quality of Hanwoo Steers

답리작 재배 청보리 사일리지 급여가 거세 한우의 증체, 사료요구량 및 육질에 미치는 영향

  • Seo, Sung (Grassland and Forages Research Division, National Institute of Animal Science, RDA) ;
  • Kim, Won-Ho (Grassland and Forages Research Division, National Institute of Animal Science, RDA) ;
  • Kim, Jong-Geun (Grassland and Forages Research Division, National Institute of Animal Science, RDA) ;
  • Choi, Gi-Jun (Grassland and Forages Research Division, National Institute of Animal Science, RDA) ;
  • Kim, Ki-Yong (Grassland and Forages Research Division, National Institute of Animal Science, RDA) ;
  • Cho, Won-Mo (Grassland and Forages Research Division, National Institute of Animal Science, RDA) ;
  • Park, Beom-Young (Grassland and Forages Research Division, National Institute of Animal Science, RDA) ;
  • Kim, Young-Hoon (Jeongeub Agricultural Technology Center)
  • Received : 2010.05.17
  • Accepted : 2010.08.23
  • Published : 2010.09.30

Abstract

This study was carried out to investigate the effect of feeding whole crop barley silage (WBS) on the growth performance, gain, feed requirement, carcass grade and beef quality of Hanwoo steers in 1999 to 2001. Twenty one steers were allocated, and divided into three treatment groups which fed rice straw only (control), WBS only, and fresh rice straw silage plus WBS during overall period ad libitum. Concentrates were fed at 1.5% level of live-body weight during growing stages, 4~12 months of age, at 1.8% level of live-body weight during early fattening stages, 13~18 months of age, and ad libitum after late fattening stages, 19~27months of age. The production yields of WBS were 17,135 kg as a silage, and 6,011 kg as a dry matter per ha, and the quality of WBS was 2~3 grade, while that of rice straw silage was 4grade. The daily gain with feeding of WBS (0.70 kg) during experimental period was higher than that of control group (0.65 kg), and the concentrate requirement (7.31 kg) per kg gain in WBS was lower than that of control (8.95 kg). The effects of gain and feed efficiency were very distinct during growing stage. i.e., the daily gain of WBS (0.84 kg) was increased by 65% compared to control (0.51 kg), and the concentrate requirement (4.16 kg) per kg gain in feeding of WBS was decreased by 35%, compared to control (6.39 kg). Meat quality with WBS was higher than that of control. Frequency rate of 1 and/or $1^+$ grade, and marbling score of feeding of WBS were 62.5% and 4.38, while those of control were 37.5% and 2.75, respectively. The results of the sensory evaluation showed that Hanwoo beef fed with WBS were better than that of control. In conclusion, feeding of WBS was desirable to improve daily gain, reduction of concentrates, feed efficiency and meat quality of Hanwoo steers.

Keywords

Forage barley;Daily gain;Carcass grade;Meat quality;Sensory evaluation

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