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한우 선발형질로써 초음파 형질의 활용방안 연구 KCI 등재

Study on the Application of Ultrasound Traits as Selection Trait in Hanwoo

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농업생명과학연구 (Journal of Agriculture & Life Science)
경상대학교 농업생명과학연구원 (Institute of Agriculture & Life Science, Gyeongsang National University)
초록

Hanwoo young bulls are selected based on performance test using the weight at 12 months and pedigree index comprising marbling score. Pedigree index was not based on the progeny tested data but the breeding value of the proven bulls; resulting a lower accuracy. The progeny testing of the young bulls was categorized into testing at farm and at the test station. The farm tested data was difficult to compare with those from test station data. Farm tested bulls had different slaughter ages than those for test station bulls. Therefore, this study had considered a different age at slaughter for respective records on ultrasound traits. Records on body weight at 12 months, ultrasound measures at 12 and 24 months(uIMF, uEMA, uBFT, and uRFT), and carcass traits(CWT, EMA, BFT, and MS) were collected from steers and bulls of Hanwoo national improvement scheme between 2008 and 2013. Fixed effects of batch, test date, test station, personnel for measurement, personnel for judging, and a linear covariate of weight at measurement were fitted in the animal models for ultrasound traits. The ranges of heritability estimates of the ultrasound traits at 12 and 24 months were 0.21-0.43 and 0.32-0.47, respectively. Ultrasound traits at 12 and 24 months between similar carcass traits was genetically correlated at 0.52-0.75 and 0.86-0.89, respectively.

저자
  • 최태정(농촌진흥청 국립축산과학원) | Tae Jeong Choi (National Institute of Animal Science, RDA, Cheonan, 31000, Korea)
  • 최연호(농촌진흥청 국립축산과학원) | Yun Ho Choy (National Institute of Animal Science, RDA, Cheonan, 31000, Korea)
  • 박병호(농촌진흥청 국립축산과학원) | Byoungho Park (National Institute of Animal Science, RDA, Cheonan, 31000, Korea)
  • 조광현(농촌진흥청 국립축산과학원) | Kwang Hyun Cho (National Institute of Animal Science, RDA, Cheonan, 31000, Korea)
  • M.Alam(농촌진흥청 국립축산과학원) | Alam M. (National Institute of Animal Science, RDA, Cheonan, 31000, Korea)
  • 강하연(농촌진흥청 국립축산과학원) | Ha Yeon Kang (National Institute of Animal Science, RDA, Cheonan, 31000, Korea)
  • 이성수(농협중앙회 한우개량사업소) | Seung Soo Lee (Hanwoo Improvement Main Center, N.A.C.F, Seosan, 31948, Korea)
  • 이재구(농협 젖소개량사업소) | Jae Gu Lee (Dairy Cattle Genetic Improvement Center, DCIC, Goyang, 10292, korea) Corresponding author