농후사료 및 TMR사료 급여에 따른 한우 거세우의 도체 성적 요인 간의 상관분석
Correlation Analysis of Carcass Characteristics Factors According to Concentrate Diet and TMR Diet Feeding in Hanwoo Steers
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본 연구는 사료 급여 방식(농후사료, TMR사료)의 차이에 따라 한우 거세우의 도체 성적 상관분석이 어떤 결과를 나타냈는지 확인하였다. 이에 따른 결과로 농후사료를 급여하는 사육형태의 경우에는 농장마다 개체 간의 도체중 편차와 근내지방도 편차가 농장 평균 도체 판매 가격에 영향을 미치는 경향이 확인되었고(p=0.057, p=0.053), 모두 부(-)의 효과를 나타냈다. 표준화 회귀 계수(β)를 통하여 각 변수의 영향력을 비교한 결과, 도체중 편차와 근내지방도 편차의 표준화 회귀 계수가 각각 –0.38과 –0.30으로 높았고, 근내지방도 대비 도체중 편차가 더 큰 영향을 미치는 것으로 나타났다. TMR사료의 경우, 농장마다 개체들의 근내지방도 편차가 농장 평균 도체 판매 가격에 유의적인 영향을 미치는 것으로 확인되었고(p=0.002) 부(-)의 효과를 나타냈다. 이러한 결과를 바탕으로 농후사료 급여 농장에서는 도체중과 근내지방도 변이계수들이 평균 도체 판매 가격에 영향을 미치는 경향이 확인되었으며(0.05<p<0.1), TMR사료를 급여하는 농가에서는 근내지방도 변이 계수가 유의적인 영향을 미치는 것으로 분석되었다. 결론적으로, 도축성적 중 근내지방도 변이계수가 사료 급여형태별(농후사료, TMR사료) 모두 평균 도체 판매 가격에 가장 명확하게 영향을 미치는 것으로 나타났으며, 추가로 농후사료를 급여하는 농장에서는 거세한우 개체의 도체중과 함께 편차를 줄이는 것이 농가소득 증대를 모색할 수 있을 것으로 판단된다.
Abstract
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.
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