UMR1213 Herbivores, INRA, VetAgro Sup, Clermont Université, Université de Lyon, 63122 Saint-Genès-Champanelle, France; INATAA, Université Frères Mentouri Constantine, Route de Ain El-Bey, 25000 Constantine, Algeria.
UMR1213 Herbivores, INRA, VetAgro Sup, Clermont Université, Université de Lyon, 63122 Saint-Genès-Champanelle, France.
Meat Sci. 2017 Dec;134:18-27. doi: 10.1016/j.meatsci.2017.07.014. Epub 2017 Jul 18.
This study investigates relationships between 21 biomarkers and meat color traits of Longissimus thoracis muscles of young Aberdeen Angus and Limousin bulls. The relationships found allowed to propose metabolic processes underlying meat color. The color coordinates were related with several biomarkers. The relationships were in some cases breed-dependent and the variability explained in the regression models varied between 31 and 56%. The correlations between biomarkers and color parameters were sometimes opposite between breeds. The PCA using the 21 biomarkers and the instrumental color coordinates showed that these variables discriminated efficiently between the two studied breeds. Results are coherent with earlier studies on other beef breeds showing that several proteins belonging to different but partly related biological pathways involved in muscle contraction, metabolism, heat stress and apoptosis are related to beef color. The results suggest that in future, biomarkers may be used to classify meat cuts sampled early post-mortem according to their forthcoming color.
本研究调查了青年安格斯牛和利木赞牛胸最长肌的 21 种生物标志物与肉质颜色性状之间的关系。所发现的关系使我们能够提出肉色背后的代谢过程。颜色坐标与多种生物标志物有关。这些关系在某些情况下取决于品种，回归模型中解释的可变性在 31%至 56%之间变化。在品种之间，生物标志物与颜色参数之间的相关性有时相反。使用 21 种生物标志物和仪器颜色坐标进行的 PCA 表明，这些变量有效地区分了两种研究品种。这些结果与其他牛肉品种的早期研究结果一致，表明属于不同但部分相关的生物途径的几种蛋白质，包括肌肉收缩、代谢、热应激和细胞凋亡，与牛肉颜色有关。结果表明，未来生物标志物可用于根据肉样死后早期的颜色对其进行分类。
