• 제목/요약/키워드: carcass price

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Genetic Relationship between Carcass Traits and Carcass Price of Korean Cattle

  • Kim, Jong-Bok;Kim, Dae-Jung;Lee, Jeong-Koo;Lee, Chae-Young
    • Asian-Australasian Journal of Animal Sciences
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    • 제23권7호
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    • pp.848-854
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    • 2010
  • The objectives of this study were to estimate genetic parameters for the carcass price and carcass traits contributing to carcass grading and to investigate the influence of each carcass trait on the carcass price using multiple regression and path analyses. Data for carcass traits and carcass prices were collected from March 2003 to January 2009 on steers of Korean cattle raised at private farms. The analytical mixed animal model, including slaughter house-year-month combination, linear and quadratic slaughter age as fixed effects and random animal and residual effects, was used to estimate genetic parameters. The effects of carcass traits on the carcass price were evaluated by applying multiple regression analyses. Heritability estimates of carcass traits were $0.20{\pm}0.08$ for carcass weight (CWT), $0.33{\pm}0.10$ for back fat thickness (BFT), $0.07{\pm}0.05$ for eye-muscle area (EMA) and $0.25{\pm}0.10$ for marbling score (MS), and those of carcass prices were $0.21{\pm}0.10$ for auction price per 1 kg of carcass weight (AP) and $0.13{\pm}0.07$ for total price (CP). Genetic correlation coefficients of AP with CWT and MS were $-0.35{\pm}0.29$ and $0.99{\pm}0.04$, respectively, and those of CP with CWT and MS were $0.59{\pm}0.22$ and $0.39{\pm}0.29$ respectively. If an appropriate adjustment for temporal economic value is available, the moderate heritability estimates of AP and CP might suggest their potential use as the breeding objectives for improving the gross incomes of beef cattle farms. The large genetic correlation estimates of carcass price variables with CWT and MS implied that simultaneous selection for both CWT and MS would be also useful in enhancing income.

Contribution analysis of carcass traits on auction price for Hanwoo in Gyeonggi province

  • Yun, Jewoong;Kim, Yoseph;Lee, Jieun;Kang, Tae Hun;Kim, Myunghoo;Seo, Jakyeom;Cho, Seong-Keun;Kim, Byeong-Woo
    • 농업과학연구
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    • 제48권3호
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    • pp.367-375
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    • 2021
  • The aim of this study was to identify the factors contributing to the auction price and total price of carcasses by using squared semi-partial correlation of carcass traits. The data used in this study were the carcass grades assigned to 7,145 head of Hanwoo slaughtered from 2013 to 2018 in Gyeonggi province and 106,779 head of Hanwoo slaughtered from 2013 to 2018 outside of Gyeonggi province. The rankings of the carcass traits contributing to the auction price were in the order of marbling score (86.70%), backfat thickness (10.42%), eye muscle area (1.40%), and carcass weight (0.92%) in Gyeonggi province. In Hanwoo slaughtered outside of Gyeonggi province, the rankings were in the order of marbling score (88.53%), backfat thickness (9.06%), eye muscle area (1.24%), and carcass weight (0.99%). The rankings of carcass traits contributing to the total price were in the order of marbling score (45.95%), carcass weight (45.60%), backfat thickness (6.49%) and eye muscle area (0.77%) in Gyeonggi province. In Hanwoo slaughtered outside Gyeonggi province, the rankings were in the order of marbling score (49.64%), carcass weight (43%), backfat thickness (5.86%), and eye muscle area (0.66%). Gyeonggi province Hanwoo had thinner backfat thickness than Hanwoo outside Gyeonggi, and it had a higher contribution to auction price and total price. Collectively, Hanwoo in Gyeonggi province showed higher contribution scores for backfat thickness. This study aimed to provide basic information to guide Hanwoo breeding and increase profits for Hanwoo farms through the analysis of each traits according to environmental factors.

Contribution analysis of Hanwoo carcass traits on unit price in national slaughter house

  • Eum, Seung-Hoon;Park, Hu-Rak;Seo, Jakyeom;Cho, Seong-Keun;Kim, Byeong-Woo
    • 농업과학연구
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    • 제43권4호
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    • pp.603-611
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    • 2016
  • The aim of this study was to analyze the contribution factors (backfat thickness, eye muscle area, carcass weight, marbling score, and feeding period) affecting meat unit price (South-Korean Won / Kg of meat). The best slaughtering age to maximize unit price was also assumed. All data used in this study were acquired from the Korea Institute for Animal Products Quality Evaluation from 2010 to 2014. Contributions to the estimated unit price of cows by the following factors, backfat thickness, eye muscle area, carcass weights, feeding period, and marbling score were 2.65%, 0.04%, 1.58%, 1.58%, and 95.72%, respectively. Contribution to estimated unit price of steers by the same factors (backfat thickness, eye muscle area, carcass weights, feeding period, and marbling score) were 7.88%, 1.24%, 0.07%, 90.81%, and 95.72%, respectively. Slaughtering ages ranged from 26 to 36 months and the data were separated into each month for an 11 month period. The unit price of meat from Hanwoo slaughtered at 30 months was highest among groups. The lowest unit price was observed in the group belonging to the Hanwoo slaughtered at 36 months. In conclusion, of all contributing factors, marbling score affected unit price the most. Based on our results, it is recommended that the optimal slaughtering age be set at 30 months to maximize unit price. Moreover, the feeding of beef cattle past 30 months of age is not recommended because of the increase in feeding costs.

Effect of Carcass Traits on Carcass Prices of Holstein Steers in Korea

  • Alam, M.;Cho, K.H.;Lee, S.S.;Choy, Y.H.;Kim, H.S.;Cho, C.I.;Choi, T.J.
    • Asian-Australasian Journal of Animal Sciences
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    • 제26권10호
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    • pp.1388-1398
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    • 2013
  • The present study investigated the contribution of carcass traits on carcass prices of Holstein steers in Korea. Phenotypic data consisted of 76,814 slaughtered Holsteins (1 to 6 yrs) from all over Korea. The means for live body weight at slaughter (BWT), chilled carcass weight (CWT), dressing percentage (DP), quantity grade index (QGI), eye muscle area (EMA), backfat thickness (BF) and marbling score (MS), carcass unit price (CUP), and carcass sell prices (CSP) were 729.0 kg, 414.2 kg, 56.79%, 64.42, $75.26cm^2$, 5.77 mm, 1.98, 8,952.80 Korean won/kg and 3,722.80 Thousand Korean won/head. Least squares means were significantly different by various age groups, season of slaughter, marbling scores and yield grades. Pearson's correlation coefficients of CUP with carcass traits ranged from 0.12 to 0.62. Besides, the relationships of carcass traits with CSP were relatively stronger than those with CUP. The multiple regression models for CUP and CSP with carcass traits accounted 39 to 63% of the total variation, respectively. Marbling score had maximum economic effects (partial coefficients) on both prices. In addition, the highest standardized partial coefficients (relative economic weights) for CUP and CSP were calculated to be on MS and CWT by 0.608 and 0.520, respectively. Path analyses showed that MS (0.376) and CWT (0.336) had maximum total effects on CUP and CSP, respectively; whereas BF contributed negatively. Further sub-group (age and season of slaughter) analyses also confirmed the overall outcomes. However, the relative economic weights and total path contributions also varied among the animal sub-groups. This study suggested the significant influences of carcass traits on carcass prices; especially MS and CWT were found to govern the carcass prices of Holstein steers in Korea.

Contribution analysis of carcass traits and seasonal effect on auction price for Hanwoo steers

  • Kang, Tae Hun;Cho, Seong-Keun;Seo, Jakyeom;Kim, Myunghoo;Kim, Byeong-Woo
    • 농업과학연구
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    • 제46권3호
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    • pp.461-469
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    • 2019
  • The aim of this study was to analyze the contribution of carcass traits (backfat thickness, eye muscle area, carcass weight and marbling score) and the season at slaughter to the price (auction and market) using squared semi-partial correlation. The season at slaughter (summer expressed as season_2, autumn as season_3, and winter as season_4) were added into the estimation as dummy variables, and spring was set as a default variable. In this study, the carcass grades of 22,298 Hanwoo steers slaughtered from 2012 to 2017 were used to performmultiple regression analysis. The rankings of the contribution of the carcass traits and the seasons at slaughter to the auction prices were in the order of marbling score (68.63%), season_4 (11.88%), backfat thickness (10.45%), eye muscle area (6.11%), season_3 (2.19%), season_2 (0.45%) and carcass weight (0.28%). (R-square of the regression = 0.4101). The rankings of the contribution to the total prices were in the order of carcass weight (51.74%), marbling score (32.12%), season_4 (6.04%), backfat thickness (5.54%), eye muscle area (3.22%), season_3 (1.14%), and season_2 (0.19%). (R-Square of the regression = 0.6486). As a result, season_3 and season_4 had a negative effect on the auction price and total price. Because of seasonal event such as Korean Thanksgiving Day and Korean New Year's Day on season_3 and season_4, much supply was needed to meet the high demand. Thus, the seasonal effect at slaughter could be another factor to be cosideredin when considering of slaughter or breeding.

한우의 도체 형질이 경제성에 미치는 영향 (The Effect of Carcass Traits on Economic Values in Hanwoo)

  • 이중재;최승덕;당창권;강석남;김내수
    • 한국축산식품학회지
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    • 제31권4호
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    • pp.603-608
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    • 2011
  • 본 연구는 한우 농가의 소득에 직접적인 영향을 미치는 경매단가(AP) 및 도체판매가(CP)에 영향을 미치는 도체 특성(근내지방도(MS), 배최장근단면적(LMA), 등지방 두께(BFT), 도체중(CW) 및 육량 지수(MYI))와의 상관관계를 조사하였다. AP의 경우는 근내지방도(MS)가 가장 높은 상관(r=0.73)을 나타내었으며, CP는 도체중이 0.71로 가장 높고, 다음으로 근내지방도가 영향력이 높게 나타났다. 하지만, LMA, MYI는 비교적 낮은 상관을 나타내었다. 이상의 결과 농가의 소득의 향상과 한우의 MS 및 CW 향상이 유의적인 상관도가 있었다.

Genetic Parameter Estimates of Carcass Traits under National Scale Breeding Scheme for Beef Cattle

  • Do, ChangHee;Park, ByungHo;Kim, SiDong;Choi, TaeJung;Yang, BohSuk;Park, SuBong;Song, HyungJun
    • Asian-Australasian Journal of Animal Sciences
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    • 제29권8호
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    • pp.1083-1094
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    • 2016
  • Carcass and price traits of 72,969 Hanwoo cows, bulls and steers aged 16 to 80 months at slaughter collected from 2002 to 2013 at 75 beef packing plants in Korea were analyzed to determine heritability, correlation and breeding value using the Multi-Trait restricted maximum likelihood (REML) animal model procedure. The traits included carcass measurements, scores and grades at 24 h postmortem and bid prices at auction. Relatively high heritability was found for maturity ($0.41{\pm}0.031$), while moderate heritability estimates were obtained for backfat thickness ($0.20{\pm}0.018$), longissimus muscle (LM) area ($0.23{\pm}0.020$), carcass weight ($0.28{\pm}0.019$), yield index ($0.20{\pm}0.018$), yield grade ($0.16{\pm}0.017$), marbling ($0.28{\pm}0.021$), texture ($0.14{\pm}0.016$), quality grade ($0.26{\pm}0.016$) and price/kg ($0.24{\pm}0.025$). Relatively low heritability estimates were observed for meat color ($0.06{\pm}0.013$) and fat color ($0.06{\pm}0.012$). Heritability estimates for most traits were lower than those in the literature. Genetic correlations of carcass measurements with characteristic scores or quality grade of carcass ranged from -0.27 to +0.21. Genetic correlations of yield grade with backfat thickness, LM area and carcass weight were 0.91, -0.43, and -0.09, respectively. Genetic correlations of quality grade with scores of marbling, meat color, fat color and texture were -0.99, 0.48, 0.47, and 0.98, respectively. Genetic correlations of price/kg with LM area, carcass weight, marbling, meat color, texture and maturity were 0.57, 0.64, 0.76, -0.41, -0.79, and -0.42, respectively. Genetic correlations of carcass price with LM area, carcass weight, marbling and texture were 0.61, 0.57, 0.64, and -0.73, respectively, with standard errors ranging from ${\pm}0.047$ to ${\pm}0.058$. The mean carcass weight breeding values increased by more than 8 kg, whereas the mean marbling scores decreased by approximately 0.2 from 2000 through 2009. Overall, the results suggest that genetic improvement of productivity and carcass quality could be obtained under the national scale breeding scheme of Korea for Hanwoo and that continuous efforts to improve the breeding scheme should be made to increase genetic progress.

한우 암소에서 도체형질과 도체가격간의 상관관계 (The Influence of Carcass Traits on Carcass Price in Mature Hanwoo Cow)

  • 김대중;이창우;이채영;김종복
    • Journal of Animal Science and Technology
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    • 제52권2호
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    • pp.157-164
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    • 2010
  • 본 연구는 성숙한 한우 암소 도체에서 몇 개의 도체형질들이 경락단가나 도체가격과 같은 가격변수의 변이에 미치는 영향력을 파악하기 위하여 도체형질과 가격변수들 간의 상관관계 추정, 다중회귀분석 및 경로분석 등을 실시했다. 자료는 강원도 홍천지역 한우 사육농가에서 번식우로 사용되다 2008년도에 도축된 96두의 도체 판정결과를 이용하였다. 도축된 암소들의 도축시 평균 나이는 약 51개월 령이었으며, 도살시 생체중, 냉도체중, 등지방두께, 등심면적, 9단계로 구분하여 평가한 근내지방도 및 도체율의 평균치는 각각 556.81 kg, 319.24 kg, 10.95 mm, $78.08\;cm^2$, 3.92 및 57.19%였다. 그리고 도체경락단가와 도체가격은 각각 12,681원 및 4,070천원이었다. 경락단가와 상관계수가 큰 형질은 MAR, DP 및 EMA 등이었고 육량지수는 상관계수가 제일 작았다. 도체 경락단가를 종속변수로 CWT, BFT, EMA MAR 및 DP등 5개의 도체 형질을 독립변수로 적합시켜 추정한 다중회귀 방정식에서 모형 방정식의 결정계수는 69.86%였고, 도체가격을 종속변수로 하여 추정한 모형 방정식의 결정계수는 85.43%였다. 다중회귀 분석에서 CWT, BFT, EMA, MAR 및 DP의 표준화 편회귀계수는 AP를 종속변량으로 한 방정식에서 각각 -0.028, -0.106, 0.107, 0.814, 0.075, 그리고 CP를 종속변량으로 하는 방정식에서는 각각 0.561, -0.060, 0.083, 0.590, 및 0.051으로 나타나 AP의 변이에 큰 영향을 미치는 형질은 MAR 이었고, CP의 변이에 큰 영향을 미치는 형질은 CWT와 MAR이었던 것으로 판단된다. 경로분석 결과에서도 AP의 변이에 큰 영향을 미치는 형질은 MAR로서 직접효과와 간접효과를 합친 MAR의 기여도는 0.668이었다. 그리고 CP의 변이에 영향을 미치는 MAR의 기여도는 0.408 그리고 CWT의 기여도는 0.397이었다. 이상의 결과를 종합해보면 육량지수는 AP나 CP에 큰 영향을 미치지 않으며 AP의 변이에 영향을 크게 미치는 것은 MAR이고 CP에 영향을 크게 미치는 형질은 MAR과 CWT였다.

한우의 경락가격에 대한 요인별 기여도 분석 (Effects of Carcass Traits on Auction Price in Hanwoo)

  • 선두원;김병우;박재찬;이정규
    • Journal of Animal Science and Technology
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    • 제54권2호
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    • pp.77-82
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    • 2012
  • 본 연구는 성, 도축계절 및 도축연도가 도체형질에 미치는 영향을 조사하고, 도체형질이 경락가격과 총가격에 미치는 기여도를 추정하기 위해 수행되었다. 2008년에서 2010년까지 도축된 한우4,231두의 도체등급 자료를 분석에 이용하였다. 성, 도축계절 및 도축연도는 도체형질에 유의적인 영향을 미쳤다. 준부분 상관제곱(squared semi-partial correlation) 값을 이용한 요인별 기여도 분석에서 경락가격의 R-Square는 0.55로 나타났다. 등지방두께, 배최장근단면적, 도체중 및 근내지방도의 경락가격 기여도는 각각 2.66, 0.32, 3.48 및 93.54%였다. 총가격의 R-Square가 0.82로 나타났으며, 근내지방도와 도체중의 기여도는 각각 46.25%와 52.38%였다.

Estimation of Relative Economic Weights of Hanwoo Carcass Traits Based on Carcass Market Price

  • Choy, Yun-Ho;Park, Byoung-Ho;Choi, Tae-Jung;Choi, Jae-Gwan;Cho, Kwang-Hyun;Lee, Seung-Soo;Choi, You-Lim;Koh, Kyung-Chul;Kim, Hyo-Sun
    • Asian-Australasian Journal of Animal Sciences
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    • 제25권12호
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    • pp.1667-1673
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    • 2012
  • The objective of this study was to estimate economic weights of Hanwoo carcass traits that can be used to build economic selection indexes for selection of seedstocks. Data from carcass measures for determining beef yield and quality grades were collected and provided by the Korean Institute for Animal Products Quality Evaluation (KAPE). Out of 1,556,971 records, 476,430 records collected from 13 abattoirs from 2008 to 2010 after deletion of outlying observations were used to estimate relative economic weights of bid price per kg carcass weight on cold carcass weight (CW), eye muscle area (EMA), backfat thickness (BF) and marbling score (MS) and the phenotypic relationships among component traits. Price of carcass tended to increase linearly as yield grades or quality grades, in marginal or in combination, increased. Partial regression coefficients for MS, EMA, BF, and for CW in original scales were +948.5 won/score, +27.3 $won/cm^2$, -95.2 won/mm and +7.3 won/kg when all three sex categories were taken into account. Among four grade determining traits, relative economic weight of MS was the greatest. Variations in partial regression coefficients by sex categories were great but the trends in relative weights for each carcass measures were similar. Relative economic weights of four traits in integer values when standardized measures were fit into covariance model were +4:+1:-1:+1 for MS:EMA:BF:CW. Further research is required to account for the cost of production per unit carcass weight or per unit production under different economic situations.