期刊
MEAT SCIENCE
卷 98, 期 2, 页码 279-288出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2014.06.005
关键词
NIRS; Meat quality; Fatty acid; Sunflower; Flaxseed
资金
- AAFC Peer Review Program [1821]
- Alberta Meat and Livestock Agency [2012R20R]
- Alberta Crop Industry Development Fund [2011C313F]
- Livestock Gentec
- Canadian Beef Grading Agency
- Alberta Livestock and Meat Agency [2012S008S]
This study tested the ability of near infrared reflectance spectroscopy (NIRS) to predict meat chemical composition, quality traits and fatty acid (FA) composition from 63 steers fed sunflower or flaxseed in combination with high forage diets. NIRS calibrations, tested by cross-validation, were successful for predicting crude protein, moisture and fat content with coefficients of determination (R-2) (RMSECV, g . 100g(-1) wet matter) of 0.85 (0.48), 0.90 (0.60) and 0.86 (1.08), respectively, but were not reliable for meat quality attributes. This technology accurately predicted saturated, monounsaturated and branched FA and conjugated linoleic acid content (R-2: 0.83-0.97; RMSECV: 0.04-1.15 mg . g(-1) tissue) and might be suitable for screening purposes in meat based on the content of FAs beneficial to human health such as rumenic and vaccenic acids. Further research applying NIRS to estimate meat quality attributes will require the use on-line of a fibre-optic probe on intact samples. (C) 2014 Elsevier Ltd. All rights reserved.
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