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In the double-muscled Belgian Blue beef breed, withers height and hearth girth are routinely measured. This ismainly done to prevent a decrease in growth potential when selecting for increased muscular conformation. Themuscular conformation itself is subjectively scored. It was questioned if additional body measurements mayimprove the accuracy of estimating live weight and whether some of these body measurements may yieldinformation for evaluating the muscular conformation hence the slaughter value of a live animal. It was foundthat hearth girth and shoulder width have a high correlation with the live weight of slaughter bulls. The width ofthe hind quarters and withers height are good estimators as well. Models combining these different traits toestimate live weight have reliability up to 83%. Shoulder width and width of the hind quarters are a goodreflection of the value of the slaughter bull, which is expressed as Euro per kg cold carcass weight. The withersheight is negatively correlated (r = −0.40) with the muscular conformation of the slaughter bulls. Hearth girthhas no clear relation with the muscular conformation. The four body traits, withers height, hearth girth, shoulderwidth and width of hind quarters are interesting traits related to economical traits in the double-muscled BelgianBlue beef breed. Using these body measurements in selection might be worthwhile to consider

Parameters for the estimation of live weight and for the visual appraisal of the muscular conformation in the (double-muscled) Belgian Blue beef breed