Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Effects of Whole Crop Barley Silage (WBS) Supplementation on Growth Performance and Meat Quality of Hanwoo Steers

총체보리사일리지 급여가 한우 거세우의 생산성 및 육질특성에 미치는 영향

  • Kook, Kil (Agro-Bioindustry Technical Support Center, Chonnam National Universuty) ;
  • Lee, Byung-Chul (Department of Animal Science, Chonnam National Universuty) ;
  • Kim, Won-Ho (National Institute of Animal Scicence, RDA) ;
  • Jang, Ki-Young (Agro-Bioindustry Technical Support Center, Chonnam National Universuty) ;
  • Back, Kwang-Su (National Institute of Animal Scicence, RDA) ;
  • Moon, Seung-Ju (Department of Animal Science, Chonnam National Universuty) ;
  • Kim, Gwang-Hyun (Department of Animal Science, Chonnam National Universuty)
  • 국길 (전남대학교 농생물산업기술관리단) ;
  • 이병철 (전남대학교 동물자원학부) ;
  • 김원호 (농촌진흥청 국립축산과학원) ;
  • 장기영 (전남대학교 농생물산업기술관리단) ;
  • 백광수 (농촌진흥청 국립축산과학원) ;
  • 문승주 (전남대학교 동물자원학부) ;
  • 김광현 (전남대학교 동물자원학부)
  • Received : 2010.09.06
  • Accepted : 2011.01.27
  • Published : 2011.02.28
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Abstract

This study was conducted to investigate the effect of feeding whole crop barley silage (WBS) on the growth performance, carcass grade, and beef quality of Hanwoo steers. Twelve Hanwoo steers (12-mon-old) were allocated into either a control (rice straw fed) or WBS (whole crop barley silage fed) group (six animals per group) and fed for 540 d until the animals reached 30-mon-old. Concentrates and roughage were fed according to the feeding stage phases; finisher I (12.16-monold), II (17.21-mon-old), and III (22.30-mon-old). A significant increase in growth was observed during the finisher I stage for the steer fed WBS, whereas a significant increase in growth occurred during the finisher II stage in the control group. The yield grade of the WBS group increased significantly with a 15.6% increase in the longissimus dorsi area and a 25.7% reduction in back fat thickness. Marbling scores improved 52.4% in the WBS group compared with the control group. A significant difference in treatments was observed for the proximate chemical composition of the crude fat content. The results regarding palatability traits in the WBS group showed a significant improvement in appearance. The results indicate that the WBS group had improved longissimus muscle and marbling scores on carcass grading compared to the control.

본 연구는 총체보리사일리지 위주로 급여한 거세한우의 성장, 도체성적 및 육질에 미치는 효과를 조사하고자 실시하였다. 12개월된 거세 한우(평균체중 285 kg) 12두를 공시하여 볏짚급여구인 대조구와 총체보리사일리지 급여구로 구분하여 사육하였으며, 조사료 급여는 비육단계별(전기, 중기, 후기)로 건물기준 각각 체중의 1.3, 0.7 및 0.4%를 급여하였다. 시험기간 동안의 비육단계별 일당증체량에서 비육전기에 총체보리사일리지 급여구에서 유의적으로 증가하였다. 총체보리사일리지 급여에 의해 도체성적의 육량등급은 배최장근단면적의 15.6% 증가와 등지방 두께의 25.7% 감소로 유의적인 차이를 나타내었다. 총체보리사일리지급여에 육질의 근내지방도가 52.4% 개선되었다. 총체보리사일리지 급여에 의해 배최장근 내에 육의 이화적성분의 변화는 수분, 조단백질, 조회분 및 콜레스테롤 함량은 처리구간에 차이가 없었지만 조지방 함량이 유의적으로 증가하였다. 총체보리사일리지 급여에 의한 등심육의 관능평가에서 외관의 개선 효과는 유의적인 차이를 나타내었다. 이러한 결과는 비육기간동안 총체보리사일리지 급여로 인해 등심단면적의 증가와 등지방 두께의 감소 등의 지육 등급판정에 의한 육량 및 육질 등이 개선하는 효과가 있음을 알 수 있었다.

Keywords

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