implants, ultrasound, marbling
One hundred seventy-four mixed crossbred yearling steers (789 Ib) were used to determine if ultrasound technology could be used to predict eventual marbling score in incoming feedlot cattle. Implants were also administered to study the effects of anabolic agents on marbling. Steers were fed in a single pen at a commercial feedlot for an average of 127 days, slaughtered, and carcass data were collected. Implanted cattle gained significantly more weight (P < .05) than nonimplanted cattle. Steers implanted with Revalor gained weight more rapidly than Synovex implanted cattle. Steers that were implanted with Revalor showed a significant decrease in marbling score when compared to no implant and Synovex groups. The percentage of choice carcasses for no implant, Revalor, and Synovex were 65.5, 47.4, and 68.4. The correlation between initial ether extract, as estimated by ultrasound, and marbling score was .45 and a prediction equation including coat color, initial ether extract, and Revalor implant accounted for 26.59% of the variability in the final marbling score.
Number of Pages
South Dakota State University
Copyright © 1994 South Dakota State University.
Senn, L. A. and Wagner, J. J., "Using Ultrasound Techonology in Incoming Feedlot Steers to Predict Marbling and the Effect of Anabolic Agents on Marbling" (1994). South Dakota Beef Report, 1994. 18.