Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
권호 표지
DOI QR코드

DOI QR Code

Analysis of environment effects on the carcass traits Hanwoo cows using ultrasonic measurement

  • Received : 2017.08.01
  • Accepted : 2018.03.09
  • Published : 2018.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

Hanwoo is an important livestock resource in Korea. Its genetic improvements of economic traits have mainly focused on the steers in the past. However, there is a great necessity to extend the breed improvement programs to the cows as well. Therefore, the objective of this study was to investigate the effects of various environmental factors (person taking the measurement, region, year of measurement, month of measurement, image interpreter, birth-year and birth-year) on ultrasound measured carcass traits. A total of 27,215 ultrasound measurements of carcass traits were recorded between 2004 and 2012 for 22,620 cows born from 1997 to 2011. The ultrasound measures included backfat thickness (BFT), eye muscle area (EMA), and marbling score (MAR). The mean values for the BFT, EMA and MAR were 4.46 mm, $56.24cm^2$, and 4.12 point, respectively. Seven environmental factors, person taking the measurement, region, year of measurement, month of measurement, image interpreter, birth-year and birth-month, were tested to determine if they had a significant effect on the studied traits using the GLM procedure in SAS. All factors were found to significantly affect all the ultrasound carcass traits in this study. Unlike in previous studies, among the environmental effects, the significant effect of the image interpreter on the ultrasound carcass traits was shown for the first time in this study. These results indicate that future genetic evaluations of ultrasound carcass traits of Hanwoo cows should include all of the above environmental factors as well as the effect from people taking the measurements.

Keywords

References

  1. Brethour JR. 2000. Using serial ultrasound measures to generate models of marbling and backfat thickness changes in feedlot cattle. Journal of Animal Science 78:2055-2061. https://doi.org/10.2527/2000.7882055x
  2. Cheong JK, Oh YT, Choi HN, Lee CH, Kim KH, Kim KY, Choy YH, Kim HC, Hwang JM. 2012. Effects of geographic locations and year-seasons of birth on ultrasound scanned measures and carcass traits of Hanwoo steers. Journal of Animal Science and Technology 54:247-253. https://doi.org/10.5187/JAST.2012.54.4.247
  3. Choi HH. 2007. Research on selecting superior Hanwoo cows and genetic improvement using ultrasonic waves. MS. dissertation, Hanhyong National Univ., Korea. [in Korean]
  4. Choy YH, Son JK, Kong HS, Lee HK, Park KD. 2011. Estimation of genetic parameters for economic traits of Hanwoo cows using ultrasound. Journal of Animal Science and Technology 53:505-509. [in Korean] https://doi.org/10.5187/JAST.2011.53.6.505
  5. Howry DH, Bliss WR. 1952. Ultrasonic visualization of soft tissue structures of the body. Journal of Laboratory and Clinical Medicine 40:579-592.
  6. Hwang KN, Kim MC, Byun HS, Park MH, Lee KK, Han YM, Sin ST. 1997. Ultrasonographic diagnosis for the treatment of genital disease and early pregnancy diagnosis in Korean native cattle. Korean Journal of Animal ReproductionReproductive & developmental biology 21:31-37. [in Korean]
  7. Kim HC, Lee SH, Dang CK, Jun KJ, Yeon SH. Cho YM, Lee SM, Yang BS, Kim JB. 2012. Estimation of genetic parameters for ultrasound and carcass traits in Hanwoo. Journal of Animal Science and Technology 54:331-336. [in Korean] https://doi.org/10.5187/JAST.2012.54.5.331
  8. Lee DH, Lee KH, Cho CI, Kim NS. 2008.Effects of body condition score and estimation of growth curves for chest girth and ultra sonic longissimus muscle area, backfat thickness and marbling scores in Hanwoo (Korean cattle) cows. Journal of Animal Science and Technology 50:581-590. [in Korean] https://doi.org/10.5187/JAST.2008.50.5.581
  9. Lee JH, Lee YM, Oh SH, Son HJ, Jeong DJ, Whitley N, Kim JJ. 2014. Estimation of genetic parameters for real-time ultrasound measurements for Hanwoo cows at different ages and pregnancy status. Asian-Australasian Journal of Animal Sciences 27:155. https://doi.org/10.5713/ajas.2013.13430
  10. Lee JH, Yeo JS. 2011. Estimation of genetic parameters using real-time ultrasound measurements in Hanwoo. Journal of Korean Data and Information Science Society 22:1145-1152. [in Korean]
  11. Miar Y, Plastow GS, Bruce HL, Moore SS, Durunna ON, Nkrumah JD, Wang Z. 2013. Estimation of genetic and phenotypic parameters for ultrasound and carcass merit traits in crossbred beef cattle. Canadian Journal of Animal Science 94: 273-280.
  12. Moon WG, Kim BW, Roh SH, Kim HS, Jung DJ, Sun DW, Kim KN, Yoon YT, Jung JH, Jeon JT, Lee JG, Lee JG. 2007. Estimation of environmental effect and genetic parameters for the carcass traits in Hanwoo (Korean cattle). Journal of Animal Science and Technology 49:689-698. [in Korean] https://doi.org/10.5187/JAST.2007.49.6.689
  13. Noh SH, Kim CY, Won US, Park CJ, Lee SS, Lee JK. 2010. Studies on genetic parameter estimation and sire selection to ultrasound measurement traits of Hanwoo. Journal of Animal Science and Technology 52:1-8. [in Korean] https://doi.org/10.5187/JAST.2010.52.1.001
  14. Park CH, Ku YM, Kim BW, Sun DW, Kim JI, Lee KH, Lee JW, Jung YH, Lee JK. 2012. Repeated records animal model to estimate genetic parameters of ultrasound measurement traits in Hanwoo cows. Journal of Animal Science and Technology 54:71-75. [in Korean] https://doi.org/10.5187/JAST.2012.54.2.71
  15. Santana MH, Ventura RV, Utsunomiya YT, Neves HH, Alexandre PA, Oliveira Junior GA, Gomes RC, Bonin MN, Coutinho LL, Garcia JF, Silva SL, Fukumasu H, Leme PR, Ferraz JB. 2015. A genomewide association mapping study using ultrasound-scanned information identifies potential genomic regions and candidate genes affecting carcass traits in Nellore cattle. Journal of Animal Breeding and Genetics 132:420-427. https://doi.org/10.1111/jbg.12167
  16. Song YH, Kim SJ, Lee SK. 2002. Evaluation of ultrasound for prediction of carcass meat yield and meat quality in Korean native cattle (Hanwoo). Asian Australasian Journal of Animal Sciences 15:591-595. https://doi.org/10.5713/ajas.2002.591
  17. Yang BK, Kim JB, Hwang HS, Kim JI, Jung HT, Park CK, Park DH. 1999. Early pregnancy diagnosis by progesterone kit and ultrasound pregnancy detector in Hanwoo. Annals of Animal Resources Sciences 10:1-8. [in Korean]
  18. Yoon WJ. 2010. Study on genetic umprovement for meat quality of Hanwoo cows using ultrasonic measurements. Ph.D. dissertation, Hanhyong National Univ., Korea. [in Korean]