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http://dx.doi.org/10.5713/ajas.16.0692

Genetic correlation between live body measurements and beef cutability traits in Hanwoo steers  

Choy, Yun Ho (Division of Animal Breeding & Genetics, National Institute of Animal Science)
Lee, Jae Goo (Division of Animal Breeding & Genetics, National Institute of Animal Science)
Mahboob, Alam (Division of Animal Breeding & Genetics, National Institute of Animal Science)
Choi, Tae Jeong (Division of Animal Breeding & Genetics, National Institute of Animal Science)
Rho, Seung Hee (Hanwoo Improvement Center, National Agricultural Cooperative Federation)
Publication Information
Asian-Australasian Journal of Animal Sciences / v.30, no.8, 2017 , pp. 1074-1080 More about this Journal
Abstract
Objective: The growth, carcass and retail cut yield records on 1,428 Hanwoo steers obtained through progeny testing were analyzed in this study, and their heritability and genetic relationships among the traits were estimated using animal models. Methods: Two different models were compared in this study. Each model was fitted for different fixed class effects, date of slaughter for carcass traits and batch of progeny test live measurement traits, and a choice of covariates (carcass weight in Model 1 or backfat thickness in Model 2) for carcass traits. Results: The differences in body composition among individuals were deemed being unaffected by their age at slaughter, except for carcass weight and backfat thickness. Heritability estimates of body size measurements were 0.21 to 0.36. Heritability estimates of retail cut percentage were high (0.56 from Model 1 and 0.47 from Model 2). And the heritability estimates for loin muscle percentage were 0.36 from Model 1 and 0.42 from Model 2, which were high enough to consider direct selection on carcass cutability traits as effective. The genetic correlations between body size measurements and retail cut ratio (RCR) were close to zero. But, some negative genetic correlations were found with chest girths measured at yearling (Model 1) or at 24 months of age or with chest widths. Loin muscle ratio (LMR) was genetically negatively correlated with body weights or body size measurements, in general in Model 1. These relationships were low close to zero but positive in Model 2. Phenotypic correlation between cutability traits (RCR, LMR) and live body size measurements were moderate and negative in Model 1 while those in Model 2 were all close to zero. Conclusion: Therefore, the body weights or linear body measurements at an earlier age may not be the most desirable selection traits for exploitation of correlated responses to improve loin muscle or lean meat yield.
Keywords
Hanwoo; Linear Measurement; Carcass; Retail Cut; Heritability; Genetic Correlation;
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Times Cited By KSCI : 5  (Citation Analysis)
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1 Greiner SP, Rouse GH, Wilson DE, Cundiff LV, Wheeler TL. Accuracy of predicting weight and percentage of beef carcass retail product using ultrasound and live animal measures. J Anim Sci 2003;81:466-73.   DOI
2 Greiner SP, Rouse GH, Wilson DE, Cundiff LV, Wheeler TL. Prediction of retail product weight and percentage using ultrasound and carcass measurements in beef cattle. J Anim Sci 2003;81:1736-42.   DOI
3 Hassen A, Wilson DE, Rouse GH. Evaluation of carcass, live, and real-time ultrasound measures in feedlot cattle: II. Effects of different age end points on the accuracy of predicting the percentage of retail product, retail product weight, and hot carcass weight. J Anim Sci 1999;77:283-90.   DOI
4 Realini, CE, Williams RE, Pringle TD, Bertrand JK. Gluteus medius and rump fat depths as additional live animal ultrasound measurements for predicting retail product and trimmable fat in beef carcasses. J Anim Sci 2001;79:1378-85.   DOI
5 Tait RG Jr, Wilson DE, Rouse GH. Prediction of retail product and trimmable fat yields from the four primal cuts in beef cattle using ultrasound or carcass data. J Anim Sci 2005;83:1353-60.   DOI
6 Choy YH, Lee JG, Cho CI, et al. Genetic correlation between live body measurements and loin production in Hanwoo steers. Proc. 10th World Congress of Genetics Applied to Livestock Production. 2014. 769 p.
7 Wheeler TL, Cundiff LV, Koch RM, Dikeman ME, Crouse JD. Characterization of different biological types of steers (cycle IV): Wholesale, subprimal, and retail product yield. J Anim Sci 1997;75:2389-403.   DOI
8 Cunningham NL, Carpenter ZL, King GT, Butler OD, Shelton JM. Relationship of linear measurements and certain carcass characteristics to retail value, quality and tenderness of ewe, wether and ram lambs. J Anim Sci 1967;26:683-7.   DOI
9 Orts FA, King GT, Butler OD. Bone muscle relationship in the bovine carcass. J Anim Sci 1969;29:294-7.   DOI
10 Choi TJ, Alam M, Cho CI, et al. Genetic parameters for yearling weight, carcass traits, and primal-cut yields of Hanwoo cattle. J Anim Sci 2015; 93:1511-21.   DOI
11 REMLF90 Mannual [Internet]. Misztal I; 2002. [cited 2014 Jun 15]. Available from http://nce.ads.uga.edu/-ignacy
12 Meyer K, Houle D. Sampling based approximation of confidence intervals for functions of genetic covariance matrices. Proc Assoc Advmt Anim Breed Genet 2013;20:523-6.
13 Baik DH, Hoque MA, Choe HS. Estimation of genetic and environmental parameters of carcass traits in Hanwoo (Korean native cattle) populations. Asian-Australas J Anim Sci 2002;15:1523-6.   DOI
14 Gregory KE. Breeding and production of beef to optimize production efficiency, retail product percentage and palatability characteristics. J Anim Sci 1982;55:716-26.   DOI
15 Choi TJ, Kim SD, Salces AJ, Baik DH. Genetic parameter estimation on the growth and carcass traits in Hanwoo (Korean cattle). J Anim Sci Technol 2006;48:759-66.   DOI
16 Moon SS, Hwang IH, Jin SK, et al. Carcass traits determining quality and yield grades of Hanwoo steers. Asian-Australas J Anim Sci 2003; 16:1049-54.   DOI
17 Pabiou T, Fikse WF, Nasholm A, et al. Genetic parameters for carcass cut weight in Irish beef cattle. J Anim Sci 2009;87:3865-76.   DOI
18 Koots KR, Gibson JP, Smith C, Wilton JW. Analyses of published genetic parameter estimates for beef production traits. 1. Heritability. Anim Breed Abstr 1994;62:309-38.
19 Lee JW, Choi SB, Jung YH, Keown JF, Van Vleck LD. Parameter estimates for direct and maternal genetic effects on yearling, eighteenmonth, and slaughter weights of Korean native cattle. J Anim Sci 2000;78:1414-21.   DOI
20 Roh SH, Kim CY, Won YS, et al. Studies on genetic parameter estimation and sire selection to ultrasound measurement traits of Hanwoo. J Anim Sci Technol 2010;52:1-8.   DOI
21 Cundiff LV, Gregory KE, Koch RM, Dickerson GE. Genetic variation in total and differential growth of carcass components in beef cattle. J Anim Sci 1969;29:233-44.   DOI
22 Benyshek LL. Heritabilities for growth and carcass traits estimated from data on Herefords under commercial conditions. J Anim Sci 1981;53:49-56.   DOI
23 Reiling BA, Rouse GH, Duello DA. Predicting percentage of retail yield from carcass measurements, the yield grading equation, and closely trimmed, boxed beef weights. J Anim Sci 1992;70:2151-8.   DOI
24 Dikeman ME, Cundiff LV, Gregory KE, Kemp KE, Koch RM. Relative contributions of subcutaneous and intermuscular fat to yields and predictability of retail product, fat trim, and bone in beef carcasses. J Anim Sci 1998;76:1604-12.   DOI
25 Herring WO, Williams SE, Bertrand JK, Benyshek LL, Miller DC. Comparison of live and carcass equations predicting percentage of cutability, retail product weight, and trimmable fat in beef cattle. J Anim Sci 1994;72:1107-18.   DOI
26 Lee JM, Hah KH, Kim JH, et al. Study on the carcass yield grade traits and prediction of retail product weight in Hanwoo beef. Korean J Food Sci Anim Resour 2008;28:604-9.   DOI
27 Parrett DF, Romans JR, Bechtel PJ, Carr TR, McKeith FK. Beef steers slaughtered at three fat-constant end points: II. Wholesale-cut composition and predictors of percentage carcass fat and boneless retail cuts. J Anim Sci 1985;61:442-51.   DOI