Bone mineral concentration predicted by dual energy X-ray absorptiometry and its relationship with lamb eating quality
Payne, C.E., Anderson, F., Pannier, L., Pethick, D.W.ORCID: 0000-0002-3255-7677 and Gardner, G.E.
ORCID: 0000-0001-7499-9986
(2022)
Bone mineral concentration predicted by dual energy X-ray absorptiometry and its relationship with lamb eating quality.
Meat Science, 186
.
Art. 108725.
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Abstract
Lumbar bone mineral concentration, as predicted by dual energy x-ray absorptiometry (DEXA), may reflect changes in lamb maturity and eating quality. New season (n = 60) and old season (n = 60) lambs were slaughtered and DEXA scanned at a commercial abattoir across 2 kill groups. The second lumbar vertebra was isolated from the spine for determination of calcium, phosphorus, and magnesium concentration (mg/g). The loin and rack cuts were collected for consumer sensory grilling and roasting analyses. Mineral concentration was significantly higher in old season lambs within kill group 1 (P < 0.05). DEXA was a positive predictor of phosphorus and calcium concentration, but only when DEXA lean % (P < 0.05) was included in the model. Calcium and phosphorus were significant positive predictors of overall liking scores (P < 0.05), but only for the rack roast. These effects became insignificant when DEXA lean % was included. These results suggest that DEXA values likely reflect changes in both DEXA lean % and bone minerals, and that DEXA lean % was the driver of eating quality, rather than maturity.
Item Type: | Journal Article |
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Murdoch Affiliation(s): | Agricultural Sciences Food Futures Institute |
Publisher: | Elsevier BV |
Copyright: | © 2021 Published by Elsevier Ltd. |
URI: | http://researchrepository.murdoch.edu.au/id/eprint/63692 |
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