Developing a Dual X-ray Absorptiometer for Estimating Carcase Fatness in Beef at Abattoir Chain-Speed

G.E. Gardner; J. Peterse; S.E. Starling; J. Cook; M. Shirazi; A. Williams

Developing a Dual X-ray Absorptiometer for Estimating Carcase Fatness in Beef at Abattoir Chain-Speed

in 63rd International Congress of Meat Science and Technology

Autor:innen:

G.E. Gardner

G.E. Gardner ¹School of Veterinary and Life Sciences, Murdoch University, Murdoch, Australia

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J. Peterse

J. Peterse ¹School of Veterinary and Life Sciences, Murdoch University, Murdoch, Australia

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S.E. Starling

S.E. Starling ²Meat and Livestock Australia, 40 Mount Street, North Sydney, Australia

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J. Cook

J. Cook ³Scott Automation and Robotics Pty Ltd, 10 Clevedon Street, Botany, NSW, Australia; g.gardner@murdoch.edu.au

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M. Shirazi

M. Shirazi ³Scott Automation and Robotics Pty Ltd, 10 Clevedon Street, Botany, NSW, Australia; g.gardner@murdoch.edu.au

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, und

A. Williams

A. Williams ¹School of Veterinary and Life Sciences, Murdoch University, Murdoch, Australia

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Art:: Kapitel

Seiten:: 722–724

DOI:: https://doi.org/10.3920/9789086868605_324

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A prototype DEXA system was purpose-built to exactly match the dimensions of a similar system installed in a lamb abattoir in South Australia. Hind and forequarter sections from 51 beef carcases that had been spray chilled or chilled conventionally were scanned using computed tomography (CT) to determine CT fat%, and then DEXA scanned to establish a DEXA value that was used to predict CT fat%. The prototype DEXA system demonstrated good potential for predicting carcase fatness, describing 88% of the variation in whole carcase CT fat%, with RMSE values of 3.21 CT fat% units. When predicting specifically within the forequarter and hindquarter regions, the precision was similar to whole carcase levels in the forequarter, but reduced in the hindquarter, describing about 10% less of the variation in composition. Spray-chilling had little impact on the DEXA prediction of CT fat %. Given the precision and robustness to processing factors this system shows good potential for industry-wide adoption.

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63rd International Congress of Meat Science and Technology

Nurturing locally, growing globally

ISBN:: 9789086868605

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 15 Nov 2017

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Developing a Dual X-ray Absorptiometer for Estimating Carcase Fatness in Beef at Abattoir Chain-Speed

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63rd International Congress of Meat Science and Technology

Nurturing locally, growing globally

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