Analysis of Environmental Effects for Linear Type Traits and Scoring Traits on Holstein Cows

Holstein 젖소의 선형심사형질과 등급형질에 대한 환경효과 분석

  • 이득환 (한경대학교) ;
  • 김은길 (한국종축개량협회)
  • Published : 2006.12.31


Corresponding author:Deukhwan Lee, Department of Animal Life Resources, Hankyong National Univ. Seokjeong-dong Anseong-si Gyeonggi-do, Rep. of Korea 456-749Tel: 031-670-5091, Fax: 031-676-5091, E-mail : performance with including environmental and management effects on linear type traits in Holstein cows were investigated. 115,646 valid records measured from cows over 1 yrs of age by Korean Animal Improvement Association from 2000 to 2004 were used for this study. Farm, appraisal year-month, appraisal person should affect linear type and scoring traits. Most of type traits and scoring traits would be significantly affected by parity and lactation stage after absorbing farm-appraisal year-month-person effects. Otherwise, some traits such as traits related to udder would be affected by registration criteria. However, interval of appraisal time and milking time would not affect these traits. The scores related to udder, teat placement and foot angle would be positively related to parity. Final score would be optimized at cows of 2nd and 3rd parities. Dairy form, front teat placement, rear udder height, rear udder width and final score would show similar to pattern of lactation curve at lactation stage. Dairy capacity composite index would also show similar to lactation curve. This result would be indicated that more concise standardizing system for linear type scoring rules would be needed. Furthermore, correcting system for parity and lactation stage would be needed because this factor should affect physiological status, specially, udder status.


Holstein cows;Linear type traits;Parity;Lactation stage;Environmental effects


  1. Boldman, K. G., Freeman, A. E., Harris, B. L. and Kuck, A. L. 1992. Prediction if sire transmitting abilities for herd life from transmitting abilities for linear type traits. J. Dairy Sci. 75:552-563
  2. Brotherstone, S. and Hill, W. G. 1990. Dairy herd life in relation to type traits and production. Proc. 4th World Congr. Genet. Appl. Livest. Prod., Edinburgh, Scotland 14:209-212
  3. Ducrocq, V. P. and Solkner, J. 1994. 'The survival kit', a FORTRAN package for the analysis of survival data. Proc. 5th World Congr. Genet. Appl. Livest. Prod., Guelph, ON, Canada 22:51-52.
  4. Mistal, I., Lawlor, T. J., Short, T. H. and VanRaden, P. M. 1992. Multiple-trait estimation of variance components of yield and type traits using an animal model. J. Dairy Sci. 75:544-551
  5. Vollema, A. R. and Groen, A. F. 1998. Conformation traits in survival analysis of longevity in dairy cattle. Proc. 6th World Congr. Genet. Appl. Livest. Prod., Armidale, NSW, Australia 23:371-374
  6. VanRaden, P. M., Jensen, E. L., Lawlor, T. J. and Funk, D. A. 1990. Prediction of transmitting abilities for Holstein type traits. J. Dairy Sci. 73:191-197
  7. Weigle, K. A., Lawlor, T. L., Vanraden, P. M. and Wiggans, G. R. 1998. Use of linear type and production data to supplement early predicted transmitting abilities for production life. J. Dairy Sci. 81:2040-2044
  8. Rogers, G. W., McDaniel, B. T., Dentine, M. R. and Funk, D. A. 1989. Genetic correlations between survival and linear type traits measured in first lactation. J. Dairy Sci. 72:523-527
  9. Schneider, M. P., Durr, J. W., Cue, R. I. and Monardes, H. G. 2003. Impact of type traits on functional herd life of Quebec Holsteins assessed by survival analysis. J. Dairy Sci. 86:4083-3089
  10. 송치은, 상병찬, 도창희. 2002. 국내 홀스타인 젖소의 선형심사에 대한 보정계수 개발. 한국동물자원과학회지 44(1):1-12
  11. Short, T. H. and Lawlor, T. L. 1992. Genetic parameters of conformation traits, milk yield, and herd life in Holsteins. J. Dairy Sci. 75:1987-1998