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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.19.0809    [Accepted] Published online June 24, 2020.
Relationship between body size traits and carcass traits with primal cuts yields in Hanwoo steers
Hyun-Woo Seo1,*  , Van Ba Hoa1  , Pil-Nam Seong1  , Yun-Seok Kim1  , Sun-Moon Kang1  , Kuk-Hwan Seol1  , Jin-Hyoung Kim1  , Sung-Sil Moon2  , Yong-Min Choi3  , Soo-Hyun Cho1,* 
1National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
2SunJin Meat Research Center, Ansung, Korea
3National Institute of Agricultural Sciences, Wanju-gun, Korea
Correspondence:  Hyun-Woo Seo, Tel: +82-63-238-7358, Fax: +82-63-238-7397, Email: shw79@korea.kr
Soo-Hyun Cho,Email: shc0915@korea.kr
Received: 15 October 2019   • Revised: 27 January 2020   • Accepted: 22 June 2020
Abstract
Objective
This study was conducted to evaluate the correlation between body size traits, carcass traits, and primal cuts in Hanwoo steers.
Methods
Sixty-one beef carcasses were classified for conformation and primal cut weight. Additionally, carcass weight, fat thickness, carcass dimensions, and longissimus muscle area were determined to complement the grading.
Results
The average live weight and cold carcass weight were 759 and 469 kg, respectively. The mean carcass meat, fat, and bone proportions were 551, 298, and 151 g/kg, respectively. Primal cuts weight showed significant positive correlations (P<0.001) of 0.42 to 0.82 with live weight, carcass weight, and longissimus muscle area and a significant negative correlation with carcass fat (without shank, -0.38 to -0.10). Primal cut weights were positively correlated (P<0.01) with carcass length (0.41 to 0.77), forequarter length (0.33 to 0.57), 6th lumbar vertebrae–heel length (0.33 to 0.59), 7th cervical vertebrae carcass breadth (0.35 to 0.58), 5–6th thoracic vertebrae breadth (0.36 to 0.65), 7–8th thoracic vertebrae girth (0.38 to 0.63), and coxae girth (0.34 to 0.56) and non-significantly related to cervical vertebrae length and coxae thickness.
Conclusion
There was a high correlation among live weight, carcass weight, longissimus muscle area, carcass length, 7th cervical vertebrae carcass breadth, 5–6th thoracic vertebrae breadth, and 7–8th thoracic vertebrae girth of the primal cuts yield. The correlation between fat and primal cut yields was highly significant and negative. Carcass length and 7–8th thoracic vertebrae girth, appear to be the most important traits affecting primal cut yields.
Keywords: Hanwoo; Primal Cuts; Body Size


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