Prediction of intramuscular fat in lamb by visible and near-infrared spectroscopy in an abattoir environment

N. R. Lambe*, N. Clelland, J. Draper, E. M. Smith, J. Yates, L. Bunger

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The study used visible and near-infrared spectroscopy (Vis-NIR) in a large commercial processing plant, to test a system for meat quality (intramuscular fat; IMF) data collection within a supply chain for UK lamb meat. Crossbred Texel x Scotch Mule lambs (n = 220), finished on grass on 4 farms and slaughtered across 2 months, were processed through the abattoir and cutting plant and recorded using electronic identification. Vis-NIR scanning of the cut surface of the M. longissimus lumborum produced spectral data that predicted laboratory-measured IMF% with moderate accuracy (R2 0.38–0.48). Validation of the Vis-NIR prediction equations on an independent sample of 30 lambs slaughtered later in the season, provided similar accuracy of IMF prediction (R2 0.54). Values of IMF from four different laboratory tests were highly correlated with each other (r 0.82–0.95) and with Vis-NIR predicted IMF (r 0.66–0.75). Results suggest scope to collect lamb loin IMF data from a commercial UK abattoir, to sort cuts for different customers or to feed back to breeding programmes to improve meat quality.

Original languageEnglish
Article number108286
JournalMeat Science
Volume171
Early online date22 Aug 2020
DOIs
Publication statusFirst published - 22 Aug 2020

Bibliographical note

Copyright © 2020 Elsevier Ltd. All rights reserved.

Keywords

  • Lamb
  • Meat quality
  • Supply chain
  • Visible and near-infrared spectroscopy

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