Use of ultrasound to predict body composition changes in steers at 100 and 65 days before slaughter

Journal of Animal Science

Volumn 82, Issue 6, 2004, Pages 1621-1629

  Wall, P B ^a,b   Rouse, G H ^a   Wilson, D E ^a   Tait Jr , R G ^a   Busby, W D ^a  

^a IOWA STATE UNIVERSITY   (United States)

^b NONE   (United States)

Author keywords

Carcass Quality; Carcass Yield; Steers; Ultrasound

Indexed keywords

BOS TAURUS;

EID: 2642574445     PISSN: 00218812     EISSN: None     Source Type: Journal    
DOI: 10.2527/2004.8261621x     Document Type: Article

References (22)

1. Abraham, H. C., C. E. Murphy, H. R. Gross, G. C. Smith, and W. J. Franks, Jr. 1980. Factors affecting beef carcass cutability: An evaluation of the USDA yield grades for beef. J. Anim. Sci. 50:841-851.
2. American Angus Association. 2002. Spring 2002 Sire Evaluation Report. American Angus Association. St. Joseph, MO.
3. BIF. 2002. Guidelines for Uniform Beef Improvement Programs, Beef Improvement Federation, Athens, GA.
4. Brethour, J. R. 1990. Relationship of the ultrasound speckle to marbling score in cattle. J. Anim. Sci. 68:2603-2613.
5. Brethour, J. R. 1992. The repeatability and accuracy of ultrasound in measuring backfat in cattle. J. Anim. Sci. 70:1039-1044.
6. Brethour, J. R. 1994. Estimating marbling score in live cattle from ultrasound images using pattern recognition and neural network procedures. J. Anim. Sci. 72:1425-1432.
7. Brethour, J. R. 2000a. Using receiver operating characteristic analysis to evaluate the accuracy in predicting future quality grade from ultrasound marbling estimates on beef calves. J. Anim. Sci. 78:2263-2268.
8. Brethour, J. R. 2000b. Using serial ultrasound measures to generate models of marbling and backfat thickness changes in feedlot cattle. J. Anim. Sci. 78:2055-2061.
9. Crews, D. H., Jr., N. H. Shannon, R. E. Crews, and R. A. Kemp. 2002. Weaning, yearling, and preharvest ultrasound measures of fat and muscle area in steers, bulls, and heifers. J. Anim. Sci. 80:2817-2824.
10. Crouse, J. D., M. E. Dikeman, R. M. Koch, and C. E. Murphy. 1975. Evaluation of traits in the USDA yield grade equation for prediction beef carcass cutability in breed groups differing in growth and fattening characteristics. J. Anim. Sci. 41:548-553.
11. Crouse, J. D., and M. E. Dikeman. 1976. Determinates of retail product of carcass beef. J. Anim. Sci. 42:584-591.
12. Greiner, S. P. 1997. The use of real-time ultrasound and live animal measurements to predict carcass composition in beef cattle. Ph.D. Thesis, Iowa State Univ., Ames.
13. Greiner, S. P., G. H. Rouse, D. E. Wilson, L. V. Cundiff, and T. L. Wheeler. 2003a. Accuracy of predicting weight and percentage of beef carcass retail product using ultrasound and live animal measures. J. Anim. Sci. 81:466-473.
14. Greiner, S. P., G. H. Rouse, D. E. Wilson, L. V. Cundiff, and T. L. Wheeler. 2003b. The relationship between ultrasound measurements and carcass fat thickness and longissimus muscle area in beef cattle. J. Anim. Sci. 81:676-682.
15. Hamlin, K. E., R. D. Green, T. L. Perkins, L. V. Cundiff, and M. F. Miller. 1995. Real-time ultrasonic measurement of fat thickness and longissimus muscle area: I. Description of age and weight effects. J. Anim. Sci. 73:1713-1724.
16. Herring, W. O., D. C. Miller, J. K. Bertrand, and L. L. Benyshek. 1994. Evaluation of machine, technician, and interpreter effects on ultrasonic measures of backfat and longissimus muscle area in beef cattle. J. Anim. Sci. 72:2216-2226.
17. Realini, C. E., R. E. Williams, T. D. Pringle, and J. K. Bertrand. 2001. Gluteus medius and rump fat depths as additional live animal ultrasound measurements for predicting retail product and trimmable fat in beef carcasses. J. Anim. Sci. 79:1378-1385.
18. Rouse, G., D. Wilson, D. Duello, and B. Reiling. 1992. The accuracy of real-time ultrasound scans taken serially on small-, medium-, and large-framed steers and bulls slaughtered at three endpoints. 1992 Iowa State Univ. Beef and Sheep Res. Rep. A.S. Leaflet R896, Ames.
19. Rouse, G., V. Amin, B. Punt, S. Greiner, and D. Wilson. 1998. Chuteside application of real-time ultrasound for feedlot cattle marketing - A pilot project. Iowa State Univ. Anim. Sci. Leaflet R1533, Ames.
20. Rouse, G., S. Greiner, D. Wilson, C. Hays, J. R. Tait, and A. Hassen. 2000. The use of real-time ultrasound to predict live feedlot cattle carcass value. Iowa State Univ. Anim. Sci. Leaflet R1731, Ames.
21. Tait, R. G. 2002. Prediction of retail product and trimmable fat in beef cattle using ultrasound or carcass data. M.S. Thesis, Iowa State Univ., Ames.
22. USDA. 1997. United States standard for grades of carcass beef. Agricultural Marketing Service, USDA, Washington, DC. Available: http://www.ams.usda.gov/lsg/stand/standard/beef-car.pdf. Accessed May 15, 2002.