DOI QR코드

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Genetic Relationship between Ultrasonic and Carcass Measurements for Meat Qualities in Korean Steers

  • Lee, D.H. (Department of Animal Life and Resources, Hankyong National University) ;
  • Kim, H.C. (National Livestock Research Institute, RDA)
  • 투고 : 2003.01.03
  • 심사 : 2003.09.17
  • 발행 : 2004.01.01

초록

Real time ultrasonic measurements for 13th rib fat thickness (LBF), longissimus muscle area (LEMA) and marbling score (LMS) of live animal at pre-harvest and subsequent carcass measurements for fat thickness (BF), longissimus muscle area (EMA), marbling score (MS) as well as body weight of live animal, carcass weight (CW), dressing percentage (DP), and total merit index (TMI) on 755 Korean beef steers were analyzed to estimate genetic parameters. Data were analyzed using multivariate animal models with an EM-REML algorithm. Models included fixed effects for year-season of birth, location of birth, test station, age of dam, linear and quadratic covariates for age or body weight at slaughter and random animal and residual effects. The heritability estimates for LEMA, LBF and LMS on RTU scans were 0.17, 0.41 and 0.55 in the age-adjusted model (Model 1) and 0.20, 0.52 and 0.55 in the weight-adjusted model (Model 2), respectively. The Heritability estimates for subsequent traits on carcass measures were 0.20, 0.38 and 0.54 in Model 1 and 0.23, 0.46 and 0.55 in Model 2, respectively. Genetic correlation estimate between LEMA and EMA was 0.81 and 0.79 in Model 1 and Model 2, respectively. Genetic correlation estimate between LBF and BF were high as 0.97 in Model 1 and 0.98 in Model 2. Real time ultrasonic marbling score were highly genetically correlated to carcass MS of 0.89 in Model 1 and 0.92 in Model 2. These results indicate that RTU scans would be alterative to carcass measurement for genetic evaluation of meat quality in a designed progeny-testing program in Korean beef cattle.

키워드

참고문헌

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피인용 문헌

  1. Estimation of Genetic Correlations and Selection Responses for Carcass Traits between Ultrasound and Real Carcass Measurements in Hanwoo Cows vol.55, pp.6, 2013, https://doi.org/10.5187/JAST.2013.55.6.501
  2. Genetic parameters for yearling weight, carcass traits, and primal-cut yields of Hanwoo cattle1 vol.93, pp.4, 2015, https://doi.org/10.2527/jas.2014-7953
  3. Application of X-ray Computer Tomography (CT) in Cattle Production vol.20, pp.12, 2004, https://doi.org/10.5713/ajas.2007.1901
  4. Estimation of Genetic Parameters and Correlation between Yearling Ultrasound Measurements and Carcass Traits in Hanwoo Cattle vol.11, pp.5, 2004, https://doi.org/10.3390/ani11051425
  5. Genetic Analysis of Major Carcass Traits of Korean Hanwoo Males Raised for Thirty Months vol.11, pp.6, 2004, https://doi.org/10.3390/ani11061792
  6. Productive and reproductive performances of two-breed and three-breed pig crosses with Niang Megha, Hampshire and Duroc inheritance reared under subtropical Eastern Himalayan hilly climate vol.53, pp.1, 2004, https://doi.org/10.1007/s11250-020-02474-5