Ultrasonic Application for Estimating Fat Thickness of Beef Cattle

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Abstract
Since the ultrasonic research conducted by Temple (1956), extensive efforts have been directed towards the use of high frequency sound for livestock evaluation. Additional early efforts by Price et al. (1958), Price, Pearson and Emerson (1960a) and Price et al. (1960b); Stouffer, Wallentine and Wellington (1959) and Campbell, Stonaker and Esplin (1959) gave definite evidence of the usefulness of high frequency sound for objective carcass evaluation of hogs, cattle and sheep, respectively. Although most of the effort has been directed towards fat depth and 12th rib longissimus muscle area estimates, Ramsey et al. (1965b) reported high correlations between ultrasonic estimates and actual biceps femoris muscle as measured on the carcass. Stouffer et al. (1961) and Davis, Temple and McCormick (1966) reported significant correlations between repeated ultrasonic estimates on the same animal. The research reported herein investigated many phases of the ultrasonic application to cattle with emphasis on developing a technique to give a suitable precision of fat depth estimations using the “A” scan. Copyright © 1970. American Society of Animal Science . Copyright 1970 by American Society of Animal Science

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