THE EFFECT OF RIBBING SITE ON FAT THICKNESS MEASUREMENTS AND THE PREDICTION OF BEEF CARCASS COMPOSITION
1986
Over a 2-yr period, 409 beef carcasses were used to assess the differences of ribbing site (11/12th vs. 12/13th) on fat thickness measurements and the use of these measurements to predict carcass composition. Minimum fat thickness taken at the location specified for use under Canadian beef carcass grading procedures was 1.6 mm less, averaged over all carcasses at the 13th rib, compared with the same measurement taken at the 12th rib. Prediction equations for estimating carcass lean or fat content based on coefficients of determination and residual standard deviations had similar precision using fat thickness measurements from either ribbing site. These results are discussed in reference to National carcass grading procedures. Key words: Carcass grading, fat thickness, carcass composition
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