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Empty body chemical composition estimated from non-carcass parts in Belgian Blue double-muscled bulls

Published online by Cambridge University Press:  18 August 2016

S. de Campeneere ,
L. O. Fiems ,
J. M. Vanacker  and
Ch. V. Boucqué
S. de Campeneere
Affiliation:
Agricultural Research Centre — Ghent, Department of Animal Nutrition and Husbandry, Scheideweg 68, B-9090 Melle-Gontrode, Belgium
L. O. Fiems
Affiliation:
Agricultural Research Centre — Ghent, Department of Animal Nutrition and Husbandry, Scheideweg 68, B-9090 Melle-Gontrode, Belgium
J. M. Vanacker
Affiliation:
Agricultural Research Centre — Ghent, Department of Animal Nutrition and Husbandry, Scheideweg 68, B-9090 Melle-Gontrode, Belgium
Ch. V. Boucqué
Affiliation:
Agricultural Research Centre — Ghent, Department of Animal Nutrition and Husbandry, Scheideweg 68, B-9090 Melle-Gontrode, Belgium
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Abstract

Properties of the non-carcass parts in combination with empty body and half carcass weight (EBW and CCW; kg) were used to generate equations for predicting empty body chemical composition. Therefore, chemical composition of the non-carcass parts and weight of the depot fatty tissues were determined on 18 Belgian Blue double-muscled fattening bulls. Very high coefficients of determination (R2) were found between the empty body composition and on the one hand the non-carcass parts composition and on the other hand the weight of the fatty tissues. Fat in the empty body was most difficult to predict. The very high coefficients of determination are partly caused by the large variation in slaughter weight (309 to 723 kg). Therefore equations to estimate proportional composition of the empty body are discussed. Although R2 values are strongly reduced, residual standard deviations remain very low and the precision of prediction is good. The proportion of protein is most difficult to predict, as it shows a very small variation. Estimations based on composition of the non-carcass parts are mostly a little more precise than the estimates based on weight of the fatty tissues but as the latter are much easier to determine, these equations will be more appropriate for practical use. Similarly the little improvement of the estimation based on EBW instead of CCW, cannot account for the extra costs and time to determine EBW. The results of the homogenizations have proven that there is very little variation in composition, despite the large range in slaughter weight. As the Belgian Blue double-muscled animals are very deviant from other breeds, the equations found in this study can only be applied for this breed type.

Keywords

Belgian Bluebody compositionoffal
Type
Research Article
Information
Animal Science , Volume 68 , Issue 1 , February 1999 , pp. 223 - 229
Copyright
Copyright © British Society of Animal Science 1999

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