DOI QR코드

DOI QR Code

Repeatabilities and Correlations among Average Daily Gain, Backfat Thickness and Lean Percent in Swine

검정종료돈의 체중변화에 따른 일당중체량, 등지방두께 및 정육율의 반복력과 상관

  • Kim, H.C. (Division of Applied Life Science, Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Kim, B.W. (Division of Applied Life Science, Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Song, K.L. (Division of Applied Life Science, Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Oh, H.S. (Division of Applied Life Science, Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Son, C.J. (Division of Applied Life Science, Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Ha, D.W. (Korea Animal Improvement Association) ;
  • Lee, J.G. (Division of Applied Life Science, Institute of Agriculture & Life Sciences, GyeongSang National University)
  • 김현철 (경상대학교 응용생명과학부, 농업생명과학연구원) ;
  • 김병우 (경상대학교 응용생명과학부, 농업생명과학연구원) ;
  • 송광림 (경상대학교 응용생명과학부, 농업생명과학연구원) ;
  • 오하식 (경상대학교 응용생명과학부, 농업생명과학연구원) ;
  • 손창준 (경상대학교 응용생명과학부, 농업생명과학연구원) ;
  • 하동우 (한국종축개량협회) ;
  • 이정규 (경상대학교 응용생명과학부, 농업생명과학연구원)
  • Published : 2002.10.31

Abstract

Repeatabilities and Correlations among Average Daily Gain, Backfat Thickness and Lean Percent in Swine The repeatability, correlation and rank correlation coefficients among average daily gain, backfat thickness and lean percent were estimated on the basis of records tested from August 1999 to February 2000 with 695 pigs of Duroc, Landrace and Yorkshire boars and gilts tested at 2nd Korea Swine Test Station located in Ha-dong, Kyeongnam Province. The effect of the sex, breed and month of measured were estimated by the least square method. The repeatabilities were estimated from the component of variance among repeated measurements of the trait for the same animal. The results obtained are summarized as follow ; 1. The means of the major economic traits studied were 142.1 days, 173.7 days and 182.5 days for age at 1st, 2nd and 3rd measure, 57.9%, 56.2% and 55.2% for lean percent at 1st, 2nd and 3rd measure, 1.33cm, 1.61cm and 1.63cm for backfat thickness at 1st, 2nd and 3rd measure, 946.6g, 879.2g and 879.4g for average daily gain at 1st, 2nd and 3rd measure, respectively. 2. The correlation coefficients between the backfat thicknesses measured at 1st and 2nd, at 2nd and 3rd, at 1st and 3rd were 0.424, 0.700 and 1.424, respectively. The correlation coefficients between the lean percent measured at 1st and 2nd, at 2nd and 3rd, at 1st and 3rd were 0.493, 0.619 and 0.471, respectively. The correlation coefficients between the average daily gain measured at 1st and 2nd, at 2nd and 3rd, at 1st and 3rd were 0.716, 0.861 and 0.601, respectively. 3. The rank correlation coefficients between backfat thickness measured at 1st and 2nd, at 2nd and 3rd, at 1st and 3rd were 0.438, 0.693 and 0.441, respectively. The rank correlation coefficients between lean percent measured at 1st and 2nd, at 2nd and 3rd, at 1st and 3rd were 0.508, 0.593 and 0.478, respectively. The rank correlation coefficients between average daily gain measured at 1st and 2nd, at 2nd and 3rd, at 1st and 3rd were 0.704, 0.834 and 0.571, respectively. 4. The estimated repeatabilities of the traits studied were 0.428 for the lean percent, 0.374 for the backfat thickness and 0.673 for the average daily gain, respectively.

Keywords

Swine;Repeatabilities;Correlations;Backfat thickness(BF);Average daily gain(ADG)

References

  1. Bereskin, B. and Frobish, L. T. 1982. Carcass and related traits in Duroc and Yorkshire pigs selected for sow productivity and pig performance. J. Anim. Sci. 55(3):554-564. https://doi.org/10.2527/jas1982.553554x
  2. Bullock, K. D., Kuhlers, D. L. and Jungst, S. B. 1991. Effects of mass selection for increased weight at two ages on growth rate and carcass composition of Duroc - Landrace pigs. J. Anim. Sci. 69:1409-1419. https://doi.org/10.2527/1991.6941409x
  3. Christian, L. L., Strock, K. L. and Carlson, J. P. 1980. Effects of protein, breed cross, sex and slaughter weight on swine performance and carcass traits. J. Anim. Sci. 51:51.
  4. Geroge Wm. Jesse, Ellersieck, M. R., Goersch, A. L., Gerke, J. P. and Leavitt, R. K. 1983. Backfat and loin eye area and their relationship to performance of boars tested to heavier weights. J. Anim. Sci. 56(3):545-550. https://doi.org/10.2527/jas1983.563545x
  5. Hutchens, L. K., Hintz, R. L. and Johnson, R. K. 1981. Genetic and phenotypic relationship between pubertal and growth characteristics in gilts. J. Anim. Sci. 53:946.
  6. Mersmann, H. J. 1984. Accretion of Fat and Muscle in Growing Swine as Assessed by Ultrasonic Methods. J. Anim. Sci. 58(2):324-334. https://doi.org/10.2527/jas1984.582324x
  7. Moeller, S. J., Christian, L. L. and Goodwin, R. N. 1998. Development of adjustment factors for backfat and loin muscle area from serial real-time ultrasonic measurements on purebred lines of swine. J. Anim. Sci. 76(8):2008-16. https://doi.org/10.2527/1998.7682008x
  8. Smith, B. S., Jones, W. R., Hough, J. D., Huffman, D. L., Mikel, W. B. and Mulvaney, D. R. 1992. Prediction of carcass characteristics by real-time ultrasound in barrows and gilts slaughtered at three weights. J. Anim. Sci. 70: 2304-2308. https://doi.org/10.2527/1992.7082304x
  9. Van Alst, G. and Robison, O. W. 1992. Pre- diction of performance of progeny from test station boars. J. Anim. Sci. 70(7):2078-85. https://doi.org/10.2527/1992.7072078x
  10. Webb, A. J. 1975. A note on the repeatability of ultrasonic backfat measurements in pigs. Anim. Prod. 20:433.
  11. 이일주. 2001. 돼지의 검정 종료 체중과 측정 모드에 따른 경제형질의 유전모수 및 성장모수의 추정. 서울대학교 박사학위논문.
  12. 최진성. 2001. 농장검정돼지 경제형질의 유전모수, 육종가 및 유전적 변화 추세의 추정에 관한 연구. 경상대학교 박사학위논문.
  13. 한국종축개량협회. 2001. 2001년도 종돈능력개량보고서. p4-5.