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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.19.0472    [Accepted] Published online August 26, 2019.
Discrimination study between carcass yield and meat quality by gender in the Korean native cattle (Hanwoo)
Do-Gyun Kim1  , Joon-Yong Shim1  , Byoung-Kwan Cho1  , Collins Wakholi1, Youngwook Seo2  , Soohyun Cho3, Wang-Hee Lee1,* 
1Department of Biosystems Machinery Engineering, Collage of Agricultural and Life Science, Chungnam National University, Daejeon 34134, Korea
2National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54875, Korea
3Animal Products Utilization Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
Correspondence:  Wang-Hee Lee, Tel: +82-428216720, Fax: +82-428236246, Email: wanghee@cnu.ac.kr
Received: 6 June 2019   • Revised: 17 July 2019   • Accepted: 19 August 2019
Abstract
Objective
s: The aim of this study was to identify a distribution pattern of meat quality grade as a function of carcass yield index and the gender of Hanwoo (bull, cow, and steer) to determine the optimum point between both yield and quality. We also attempted to identify how pre- and post-deboning variables affect the gender-specific beef quality of Hanwoo.
Methods
A total of 361 deboning variables, consisting of 7 pre-deboning and 24 post-deboning variables from bulls (n = 139), cows (n = 69), and steers (n = 153), were obtained from the National Institute of Animal Science (NIAS) in South Korea. The database was reconstructed to be suitable for a statistical significance test between the carcass yield index (CYI) and the meat quality grade (MQG) as well as classification of meat quality. Discriminant function analysis was used for classifying MQG using the deboning parameters of Hanwoo by gender.
Results
The means of CYI according to 1+, 1, 2, and 3 of MQG were 68.64 2.02, 68.85 1.94, 68.62 5.88, and 70.99 3.32, respectively. High carcass yield correlated with low-quality grade, while high-quality meat most frequently was obtained from steers. The classification ability of pre-deboning parameters was higher than that of post-deboning parameters. Moisture and the shear force were the common significant parameters in all discriminant functions having a classification accuracy of 80.6%, 71%, and 56.9% for the bull, cow, and steer, respectively.
Conclusion
This study provides basic information for predicting the meat quality by gender using pre-deboning variables consistent with the actual grading index.
Keywords: Hanwoo; Carcass Grade; Carcass Yield; Meat Quality; Discriminant Function Analysis


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