Czech J. Anim. Sci., 2007, 52(6):149-158 | DOI: 10.17221/2314-CJAS

The accuracy of FOM instrument used in on-line pig carcass classification in the Czech Republic

M. Šprysl, J. Čítek, R. Stupka, L. Vališ, M. Vítek
Department of Animal Science, Czech University of Life Sciences Prague, Czech Republic

The objective of this study was to document the accuracy of the classification equipment used in the Czech Republic with respect to measurement errors in lean meat percentage prediction such as point of measurement error, equipment error as well as operator error. To this end, a total of 720 pigs were measured in one abattoir. One can say from the results that the correlations between correct and surrogate measurements of fat depth are high (0.95-0.98), for muscle thickness they are lower ranging from 0.49 to 0.88, and for lean meat percentage they are in the range of 0.85-0.95. The lowest correlation (0.49) was calculated for muscle depth measurement between the 2nd and 3rd last rib when the place of measurement was moved 1 cm in the caudal direction, which influenced the level of the FOM correlation. It was further demonstrated that for the second insertion the differences in lean meat percentage prediction ranged from -6.07% to +9.29%. It was also demonstrated that various instruments provided identical measurements of fat depth (r = 0.57-0.97), while for muscle depth the performance was worse (r = 0.38–0.78), which caused a fluctuation in the prediction of lean meat percentage with differences ranging from -2.56% to +2.81%. It can also be concluded that a high agreement between operators was demonstrated for the determination of lean meat percentage (r = 0.71-0.80).

Keywords: pig; classification; measurement, equipment, operator error; evaluation

Published: June 30, 2007  Show citation

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Šprysl M, Čítek J, Stupka R, Vališ L, Vítek M. The accuracy of FOM instrument used in on-line pig carcass classification in the Czech Republic. Czech J. Anim. Sci. 2007;52(6):149-158. doi: 10.17221/2314-CJAS.
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    References

    1. Brondum J., Egebo M., Agerskov C., Busk H. (1998): Online carcass grading with the Autofom ultrasound system. J. Anim. Sci., 76, 1859-1868. Go to original source... Go to PubMed...
    2. Bruwe G.G., Heinze P.H., Zondach I.B., Naude R.T. (1991): The development of a new classification system for pig carcasses in the RSA. Porcus, 6, 27-31.
    3. Busk H., Olsen E.V., Brondum J. (1999): Determination of lean meat in pig carcasses with the Autofom classification system. Meat Sci., 52, 307-314. Go to original source... Go to PubMed...
    4. Collewet G., Bogner P., Allen P., Busk H., Dobrowolski A., Olsen E., Davanel A. (2005): Determination of the lean meat percentage of pig carcasses using magnetic resonance imaging. Meat Sci., 70, 563-572. Go to original source... Go to PubMed...
    5. Čandek-Potokar M. (2003): The accuracy of on-line methods. In: Eupigclass - Final workshop, Danish meat research institute. Roskilde.
    6. Daumas G., Causer D., Shodne T., Schollhammer E. (1998): Les méthodes de classement des carcasses de porc autorisées en France en 1997. J. Res. Porc. France, 30, 1-6.
    7. Engel B., Walstra P. (1991): A simple method to increase precision or reduce expense in regression experiments to predict the proportion of lean meat of carcasses. Anim. Prod., 53, 353-359. Go to original source...
    8. Font M., Engel B. (2003): Sampling in pig grading. In: Eupigclass - Final workshop, Danish meat research institute. Roskilde.
    9. Fortin A. (2003): Carcass grading: Recent results. In: Eupigclass - Final workshop, Danish meat research institute. Roskilde.
    10. Kien S., Borzuta K. (2002): Polish protocol for updating of pig carcass classification methods in 2002. Meat and Fat Research Institute Warsaw, Poznań. 6 pp.
    11. Krška P., Bahelka I., Demo P., Peškovičová D. (2002): Meat contents in pigs estimated by various methods and compared with objective lean meat content. Czech J. Anim. Sci., 47, 206-211.
    12. Merks P. (2003): Future trends in pig-production- how does classification fit into that? In: Eupigclass - Final workshop, Danish meat research institute. Roskilde.
    13. Nissen P.M., Busk H., Oksama M., Seynaeve M., Gispert M., Waltra P., Hansson I., Olsen E. (2006): The estimated accuracy of the EU reference dissection method for pig carcass classification. Meat Sci., 73, 22-28. Go to original source... Go to PubMed...
    14. Oksama M. (2003): The accuracy of on-line methods. In: Eupigclass - Final workshop, Danish meat research institute. Roskilde.
    15. Olsen E.V. (2003): The accuracy of the reference for online measurements in pig carcass classification. In: Eupigclass - Final workshop, Danish meat research institute. Roskilde.
    16. Pulkrábek J., Wolf J. Adamec T., Fiedler J., Houška L., Jakubec V., Štefunka F. (1992): Determination of the lean meat share by FOM and ZP method on the strenght of detailed dissection in carcass pigs. ZZ, VÚŽV Prague-Uhříněves, 26 pp. (in Czech)
    17. Pulkrábek J., Fiedler J., Smital J., Houška L., Adamec T. (1994): Tissue percentages in the side of pork of pig bruds raised in the Czech Republic. Živ. Výr., 39, 743- 751. (in Czech)
    18. Pulkrábek J., Pavlík J., Smital J., Fiedler J., Houška L. (1998): Quantification of changes of the carcass at various slaughter weight. Sci. Agric. Bohem., 29, 119- 127.
    19. Pulkrábek J., Wolf J., Vališ L., Vítek M., Höteth R. (2004): Verglech verschiedener Methoden zur Bestimung des Muskelfleischanteils im Schlachtkörper des Schweines. Züchtungskunde, 76, 6-17.
    20. Scholz A., Soffner P., Littmann E., Peschke W., Förster M. (2002): Genauigkeit der Dualenenergie-Röntgenabsorptiometrie (DXA) zur Ermittlung der Slachtkörperzusammensetzung von Schweinehälften (kalt, 30-39 kg) anhand der EU-Referenzzrlegung. Züchtungskunde, 74, 376-391.
    21. Walstra P., Merkus G.S.M. (1995): Procedure for assessment of the lean meat percentage as a consequence of the new EU reference dissection method in pig carcass classification. DLO-Res. Institute Animal Science and Health Research Branch, Zeist, 22 pp.

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