This study analyzed the correlation between carcass traits of Hanwoo steers and feeding methods (concentrate feed and total mixed ration for ruminants). The results indicated that in the feeding system using concentrate feed, the variation in carcass weight and marbling score among individual animals within farms tended to affect the average carcass sale price, with both showing negative effects (p=0.057, p=0.053). The standardized regression coefficients were used to compare the influence of each variable, revealing that the coefficients for carcass weight variation and marbling score variation were –0.38 and –0.30, respectively, indicating a greater influence of carcass weight variation. Therefore, reducing the variations in carcass weight and marbling score among steers in farms using concentrate feed is likely to increase the average carcass sale price. In the case of farms using total mixed ration (TMR) for ruminants, the variation in marbling score among individual animals significantly affected the average carcass sale price, showing a negative effect (p=0.002). Thus, reducing the variation in marbling score among steers in TMR farms is likely to increase the average carcass sale price. In summary, the coefficient of variation of marbling score was found to have a significant impact on the average carcass sale price of the farm. In farms using concentrate feed, the variations in both carcass weight and marbling score tended to affect the average carcass sale price (0.05<p<0.1). Meanwhile, in farms using TMR, the variation in marbling score had a significant impact. In conclusion, the coefficient of variation for marbling score in carcass performance was found to have the most significant impact on the average carcass sale price for both feeding types (concentrate and TMR diets). Furthermore, reducing the variation along with carcass weight of Hanwoo steers on concentrate feed may be a way to increase farm income.

Ⅰ. 서론
Ⅱ. 재료 및 방법
    1. 자료의 수집
    2. 연구의 설계
    3. 데이터 분석
Ⅲ. 결과 및 고찰
    1. 사료 급여방식 분류에 따른 통계 결과
    2. 농후사료 및 TMR사료 급여군 도체 특성 편차 결과
    3. 편차와 도체가격의 상관관계 결과
    4. 사료형태별 도체특성 다중회귀분석 결과
    5. 농후사료, TMR사료 급여농가를 평균 도체 가격으로구분한 결과
    6. 도체특성 편차 추정하기 위한 회귀분석 결과
    7. 평균 도체가격, 도체특성 편차 확인을 위한 회귀분석결과
Ⅳ. 요약
Ⅴ. 참고문헌

• 이경훈(한경국립대학교 동물생명융합학부 대학원생) | Kyung Hoon Lee (Graduate Student, School of Animal Life Convergence Science, Hankyong National University, Ansung 17579, Korea)
• 하재정(경상북도 축산기술연구소 연구사) | Jae Jung Ha (Researcher, Gyeongsangbuk-Do Livestock Research Institute, Yeongju 36052, Korea)
• 김대현(전남대학교 동물자원학부 교수) | Dae Hyun Kim (Professor, Department of Animal Science, Chonnam National University, Gwangju 61186, Korea)
• 손미연(퍼듀대학교 농경제학부 연구원) | Mi Yeon Son (Researcher, Department of Agricultural Economics, Purdue University, West Lafayette, IN 47907, USA)
• 이준구(한경국립대학교 동물생명융합학부 교수) | Jun Koo Yi (Professor, School of Animal Life Convergence Science, Hankyong National University, Ansung 17579, Korea, Professor, Gyeonggi Regional Research Center, Hankyong National University, Anseong 17579, Korea) Corresponding author