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Estimation of Parameters for Individual Growth Curves of Cows in Bostaurus Coreanae

한우 암소의 개체별 성장곡선 모수 추정

  • Lee, C.W. (National Livestock Research Institute, R.D.A) ;
  • Choi, J.G. (National Livestock Research Institute, R.D.A) ;
  • Jeon, G.J. (National Livestock Research Institute, R.D.A) ;
  • Na, K.J. (National Livestock Research Institute, R.D.A) ;
  • Lee, C. (Institute of Environment & Life Science, Hallym University) ;
  • Hwang, J.M. (Division of Animal Resources Science, College of Animal Resources Science, Kangwon National University) ;
  • Kim, B.W. (Division of Animal Resources Science, College of Animal Resources Science, Kangwon National University) ;
  • Kim, J.B. (Division of Animal Resources Science, College of Animal Resources Science, Kangwon National University)
  • 이창우 (농촌진흥청 축산기술연구소) ;
  • 최재관 (농촌진흥청 축산기술연구소) ;
  • 전기준 (농촌진흥청 축산기술연구소) ;
  • 나기준 (농촌진흥청 축산기술연구소) ;
  • 이채영 (한림대학교 환경생명과학연구소) ;
  • 황정미 (강원대학교 동물자원과학대학 동물자원학부) ;
  • 김병완 (강원대학교 동물자원과학대학 동물자원학부) ;
  • 김종복 (강원대학교 동물자원과학대학 동물자원학부)
  • Published : 2003.10.31

Abstract

Weight records of Hanwoo cows from birth to 36 months of age collected in Daekwanryeong branch, National Livestock Research Institute(NLRI) were fitted to Gompertz, von Bertalanffy and Logistic functions. For the growth curve parameters fitted on individual records using Gompertz model, the mean estimates of mature weight(A), growth ratio(b) and growth rate(k) were 383.42 ${\pm}$ 97.29kg, 2.374 ${\pm}$ 0.340 and 0.0037 ${\pm}$ 0.0012, respectively, and mean estimates of body weight, age and daily gain rate at inflection were 141.05 ${\pm}$ 35.79kg, 255.63 ${\pm}$ 109.09 day and 0.500 ${\pm}$ 0.123kg, respectively. For von BertalanfTy model, the mean estimates of A, b and k were 410.47 ${\pm}$ 117.98kg, 0.575${\pm}$0.057 and 0.003 ${\pm}$ 0.001, and mean estimates of body weight, age and daily gain at inflection were 121.62 ${\pm}$ 34.94kg, 211.02 ${\pm}$ 105.53 and 0.504 ${\pm}$ O.l24kg. For Logistic model, the mean estimates of A, b and k were 347.64 ${\pm}$ 97.29kg, 6.73 ${\pm}$ 0.34 and 0.006 ${\pm}$ 0.0018, and mean estimates of body weight, age and daily gain at inflection were 173.82 ${\pm}$ 37.25kg, 324.47 ${\pm}$ 126.85 and 0.508 ${\pm}$ 0.131kg. Coefficients of variation for the A, b and k parameter estimates were 25.3%, 14.3% and 32.4%, respectively, for Gompertz model, 28.70/0, 9.9% and 33.3% for von Bertalanffy model, and 27.9°/0, 5.0% and 30.0% for Logistic model.

Keywords

Hanwoo;Cow;Growth curve;Growth models

References

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