Market cattle shown at county and state fairs and other youth shows across the United States are food animals. The endpoint value of food animals is primarily based on their carcass merit. Ideally, carcass merit should be assessed from actual carcasses. However, when carcass data cannot be collected, ultrasound evaluation of market cattle is an excellent method to accurately assess differences in fat thickness, ribeye area, and percentage of intramuscular fat within the ribeye. This 7-page fact sheet was written by Chad Carr, Dwain Johnson, and Mark Shuffitt, and published by the UF Department of Animal Science, June 2012.
AN279/AN279: Ultrasound and Carcass Merit of Youth Market Cattle (ufl.edu)
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USDA-AMS (United States Department of Agriculture, Agricultural Marketing Service). 1997. United States Standards for Grades of Carcass Beef. Accessed May 25, 2012. http://www.ams.usda.gov/AMSv1.0/getfile?dDocName=STELDEV3002979.
USDA-AMS. 2011a. National Weekly Direct Slaughter Cattle - Premiums and Discounts for the Week of: 11/7/2011. Accessed November 7, 2011. http://www.ams.usda.gov/mnreports/lm_ct155.txt.
USDA-AMS. 2011b. National Daily Boxed Beef Cutout and Boxed Beef Cuts. Accessed November 7, 2011. http://www.ams.usda.gov/mnreports/lm_xb403.txt.
Williams, A.R. 2001. "Ultrasound Applications in Beef Cattle Carcass Research and Management." J. Animal Science 80, Supplement 2: E183-E188. Accessed May 25, 2012. http://www.asas.org/symposia/esupp2/jas2278.pdf. https://doi.org/10.2527/animalsci2002.80E-Suppl_2E183x