Lean meat prediction with HGP, CGM and CSB-Image-Meater, with prediction accuracy evaluated for different proportions of gilts, boars and castrated boars in the pig population

• Published in: Meat science 2012-02, Vol.90 (2), p.338-344
• Main Authors: Engel, B., Lambooij, E., Buist, W.G., Vereijken, P.
• Format: Article
• Language: English
• Subjects: Adipose Tissue - chemistry; Animal productions; Animals; Biological and medical sciences; boars; Body Composition; carcasses; equations; Female; Food Analysis - methods; Food industries; Fundamental and applied biological sciences. Psychology; Gender; gilts; lean meat; Lean meat percentage; Male; Meat - analysis; Meat and meat product industries; Muscle, Skeletal - chemistry; Netherlands; percentage; Pig carcass grading; pig carcasses; Prediction; Reproducibility of Results; Sex Factors; slaughter; Subpopulations; Swine; Terrestrial animal productions; Vertebrates
• ISSN: 0309-1740; 1873-4138
• DOI: 10.1016/j.meatsci.2011.07.020

Prediction equations for the percentage lean meat in pig carcasses in The Netherlands were derived for the Hennessy Grading Probe 7, Capteur Gras/Maigre — Sydel and CSB-Image-Meater. Because castrated males are expected to vanish from the Dutch pig population in the near future, accuracy of prediction was evaluated for different scenarios representing a wide range of different proportions for entire males, castrated males and females in the Dutch pig population. The prediction equations for the instruments are in compliance with the EC regulations for prediction accuracy for the different scenarios. So, these equations will remain valid when castrated males are (gradually) removed from the Dutch slaughter population. Results of this study are of interest for researchers from countries or areas contemplating the use of one of the aforementioned instruments. The statistical approach for evaluation of prediction accuracy is of particular interest when changes in proportions of important subpopulations in the target population are foreseen. ▶ Lean meat prediction of pig carcasses. ▶ Prediction accuracy evaluated for three instruments. ▶ Different scenarios for proportions of the sexes in the Dutch pig population. ▶ Accuracy of prediction is robust against changes in the proportions of the sexes. ▶ All instruments are in compliance with the EC regulations.