한우도체 육량등급 설정 연구
Study on the Carcass yield Grade of Hanwoo
0
조회
0
다운로드
4
인용
0
참고문헌
초록
전국 사육농가에서 암소, 수소 및 거세우를 출하체중별로 각각 79두 총 237두의 한우를 구입하여 도체특성과 육량지수식을 추정하기 위해 수행된 본 연구에서 도출된 주요 결과는 다음과 같다.동일 출하체중대에서(500 kg~600 kg), 등심단면적은 수소가 암소 및 거세우 보다 넓었고 (P<0.01), 등지방두께는 암소가 수소 및 거세우보다 두꺼웠다(P<0.01). 육량등급요인(등지방두께, 등심단면적, 도체중)은 성과 출하체중에 따라 유의적인 차이가 있었다. 피하지방을 도체에 0.5cm 정도 부착한 거래정육중에 있어서는 출하체중이 증가될수록 감소하는 경향이었으며 동일체중에 대해서 수소가 가장 높고(p<0.01), 암소가 가장 낮았으나 거세우와 암소 간에 유의적인 차이도 없었다.한우의 거래정육율은 출하체중 증가에 따라 감소되는 경향이었으며, 성별로 유의적인 차이가(P<0.01) 있었으나 출하체중 간에는 통계적인 차이가 없었다.등지방층과 육량 등급간에는 높은 상관관계(r=-0.48, P<0.01)가 있는 것으로 증명되었다. 추정식의 적합도가 0.52로 비교적 낮은 원인은 한우는 성별 및 출하체중에 따라 배최장근단면적과 등지방층의 발달 정도에 있어서 변이가 크기 때문인 것으로 사료된다. 본 연구에서 추정한 육량지수식은= 64.74 - 0.0198 × 도체중(kg) - 5.226 × 등지방두께(cm)+0.1339×배장근면적(cm2), R2=0.52이었으며, 1992년에 설정된 지수식에 비하여 거래정육율 추정치와 실측치간의 정확도가 3.8배 정도 높았다.본 연구의 결과를 기초로 하여 현행 육량지수식이 설정되었으나, 금후 생산 및 유통여건의 변화에 따라 계속적으로 보완 개정될 필요가 있다고 생각된다.
Abstract
Total number of 237 Hanwoos were purchased from the nationwide farms based on the different market weights and sex. After slaughtering, they were evaluated to estimate the productivity of carcass components by the sex and market weight, and to predict the beef carcass yield grade equation. The main results in this study were summarized as follows; With respect to carcass characteristics, the yield percentages were different(P<0.01) among sex groups, but were not different among market weight groups. Sex or market weights showed significant effects on the carcass yield grade(YG) factors(BFT, RA, carcass weight(CW)). The YG equation from this study could be expressed as a multiple regression =64.74-0.0198×CW(kg)-5.226 ×BFT(cm)+0.1339×RA(cm2), R2=0.52 Among the YG factors, the BFT was the highest contributor to the YG equation. Compared the previous equation reported in 1992 with the equation from this study, the bias values between predicted value and the actual cutability were 9.17 and 2.39, respectively. In conclusion, the equation estimated from this study was more accurate in predicting the cutability than that from the previous equation reported in 1992.
참고문헌 (30)
- "Relationships of carcass weight conformation and carcass measurements and their use in predicting beef carcass cutability" (1968)
- "An evaluation of the USDA yield grades for beef" (1980)
- "Determining beef carcass retail product and fat yields within 1 hour postmortem" (1991)
- "Charolais and Angus steers slaughtered at equal percentages of mature cow weight Effects of slaughter weight and diet energy density on carcass traits" (1981)
- "Determinates of retail product of carcass beef", 42, pp.584~ (1976)
- "Beef steers slaughtered at three fat-constant end points Wholesale-cut composition and predictors of percentage carcass fat and boneless retail cuts" (1985)
- "Prediction of lean content in the carcasses of beef cattle From measurements of specific cuts" (1992)
- "Genetic and phenotypic(Co) variances for growth and carcass traits of purebred and composite populations of beef cattle", 73, pp.1920~ (1995)
- "Accuracy of predicting weight and percentage of beef carcass retail product using ultrasound and live animal measures", 81, pp.466~ (2003)
- "Real- time ultrasonic measurement of fat thickness and longissimus muscle area Relationship between real-time ultrasound measures and carcass retail yield", 73, pp.1725~ (1995)
- "Institute of Meat Bulletin" (1977)
- "The value of carcass weight fat depth measures and eye muscle area for predicting the percentage yield of saleable meat in Australian grass-fed beef carcasses for Japan", 41, pp.137~ (1995)
- "Mechanisms for improving the prediction of carcass composition using subcutaneous fat thickness Proceeding of the 37th international congress of meat science and technology" (1991)
- "The estimation of beef carcass muscle using cross-sectional area of M longissimus dorsi at the fifth rib", 40(13) (1995)
- "Its use in predicting beef carcass composition" (1975)
- "Use of the Hennssey grading probe fat and bone yields of beef carcasses" (1987)
- "Effects of breed type and accelerated fat removal on subprimal yields and carcass values", 73, pp.1055~ (1995)
- "Multiple-trait restricted maximum likelihood estimation of genetic and phenotypic correlations for carcass traits in the base and current populations of Japanese black cattle Anim", 67, pp.53~ (1996)
- "Influence of breed and sex on the allometric growth patterns of major bovine tissues" (1971)
- "Estimating yields of retail cuts from beef carcasses" (1960)
- "Slaughter and carcass traits of calves from first-cross and reciprocal back-cross beef cows" (1994)
- "Estimation of wholesale cuts and separable lean of carcasses from Holstein-Friesian bulls and steers fed to a constant finish" (1977)
- "Prediction of carcass composition in heavy- weight grass-fed and grain-fed beef cattle" (1993)
- "Effect of prenatal androgenization on performance and sensory traits of heifers in a single- calf system", 73, pp.989~ (1995)
- "SAS", STAT user's guide., 1996, ~
- "Predicting beef carcass cutability.", 73, pp.406~ (1995)
- "Improving The Quality, Consistency Competitiveness and Market-share offed beef" (2000)
- "Effects of plane of nutrition and slaughter weight on the carcass composition of serially slaughtered bulls steers and heifers of three breed crosses", 43, pp.205~ (1995)
- "Methods of predicting kilograms of retail cuts in the beef carcass" (1976)
- "Effects of nutritional planes on beef carcass composition and muscle-bone ratio" (1978)