胸最长肌
肌内脂肪
线性判别分析
超声波
数学
肉牛
纹理(宇宙学)
动物科学
温柔
统计
医学
生物
计算机科学
人工智能
图像(数学)
放射科
作者
Giorgia Fabbri,Matteo Gianesella,Luigi Gallo,Massimo Morgante,Barbara Contiero,Michele Muraro,Matteo Boso,Enrico Fiore
出处
期刊:Animals
[MDPI AG]
日期:2021-04-13
卷期号:11 (4): 1117-1117
被引量:9
摘要
Intramuscular fat (IMF) is a major trait in the evaluation of beef meat, but its determination is subjective and inconsistent and still relies on visual inspection. This research objective was a method to predict IMF% from beef meat using ultrasound (US) imaging texture analysis. US images were performed on the longissimus thoracis muscle of 27 Charolaise heifers. Cuts from the 12th to 13th ribs were scanned. The lipid content of the muscle samples was determined with the petrol ether (Randall) extraction method. A stepwise linear discriminant analysis was used to screen US texture parameters. IMF% measured by chemical extraction (IMFqa) was the dependent variable and the results of the texture analysis were the explanatory variables. The model highlighted seven parameters, as a predictive and a multiple regression equation was created. Prediction of IMF content (IMFpred) was then validated using IMFqa as ground truth. Determination coefficient between IMFqa and IMFpred was R2 = 0.76, while the ROC analysis showing a sensitivity of 88% and a specificity of 90%. Bland-Altman plot upper and lower limit were +1.34 and −1.42, respectively (±1.96 SD), with a mean of −0.04. The results from the present study therefore suggest that prediction of IMF content in muscle mass by US texture analysis is possible.
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