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Genetic parameters of milk β-hydroxybutyrate acid, milk acetone, milk yield, and energy-corrected milk for Holstein dairy cattle in Korea
Journal of the Korean Data & Information Science Society 2017;28:1349-60
Published online November 30, 2017
© 2017 Korean Data & Information Science Society.

SeokHyun Lee1 · Sungwoon Choi2 · Chang-Gwon Dang3 · Alarn Mahboob4 · ChangHee DO5

134National Institute of Animal Science, RDA
2Chonbuk National University
5Chungnam National University
Correspondence to: ChangHee DO
Professor, Chungnam National University, Daejeon 34134, Korea. E-mail:
Received July 8, 2017; Revised November 2, 2017; Accepted November 2, 2017.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
This study was conducted to estimate the genetic parameters for common ketosis indicators (β-hydroxybutyrate acid, BHBA; milk acetone), feed intake efficiency indicator (energy-corrected milk, ECM), and milk yield (MY) in Korean Holstein. A total of 75,072 monthly test-day records from 14,397 first parity cows were collected, between 2012 and 2016, from Korea animal improvement association enrolled farms. Variance components were estimated using a multiple trait random regression model. The heritability of BHBA and acetone levels ranged from 0.06 to 0.15 at different DIMs. The phenotypic and genetic correlations between BHBA and acetone were between 0.73 and 0.90, and between 0.93 and 0.98, respectively. The phenotypic correlation between BHBA and MY, between acetone and MY, between BHBA and ECM, and between acetone and ECM ranged from -0.18 to -0.05, -0.23 to -0.05, 0 to 0.10, and -0.09 to 0.01, respectively. Genetic correlation estimates between BHBA and MY, between acetone and MY, between BHBA and ECM, and between acetone and ECM also ranged from -0.55 to 0.05, -0.62 to -0.04, -0.10 to 0.11, and -0.20 to 0.00, respectively. We hope that these results would greatly assist in the improvement of ketosis disease in the local Holsteins.
Keywords : Acetone, β-hydroxybutyrate acid, genetic parameter, ketosis