Departamento de Producción Animal, Universidad de Córdoba, Ctra. Madrid-Cádiz Km. 396-a., 14071 Córdoba, Spain.
Meat Sci. 2013 Nov;95(3):512-9. doi: 10.1016/j.meatsci.2013.05.036. Epub 2013 May 31.
One hundred eighty ribeye steaks from Charolais, Limousin and Retinta bulls were used to describe and compare the marbling fat between fresh and stained samples. Image analysis overestimated the intramuscular fat content (P<0.05) in relation to chemical analysis. Staining had a significant effect (P<0.05) on most of the marbling fleck traits, showing an increase in the number of marbling flecks and the proportion of marbling fleck area in the whole and in the ventral half of the longissimus m., and a decrease in the size, length and width of marbling flecks. Breed had a significant influence (P<0.05) on some quantity traits of marbling, but not in the distribution and structure of marbling flecks (P>0.05). Retinta breed was leaner than French breeds and showed fewer and smaller marbling flecks (P<0.05). The results showed a positive correlation (r=0.183 to 0.465) between USDA marbling score, and intramuscular fat by image and chemical analysis.
一百八十块夏洛莱牛、利木赞牛和 Retinta 公牛的肉眼牛排用于描述和比较新鲜和染色样本之间的大理石花纹脂肪。图像分析高估了肌肉内脂肪含量（P<0.05）与化学分析相比。染色对大多数大理石花纹斑点特征有显著影响（P<0.05），显示出大理石花纹斑点数量的增加和大理石花纹斑点面积在整个和背最长肌的下半部分的比例增加，而大理石花纹斑点的大小、长度和宽度减小。品种对大理石花纹的一些数量特征有显著影响（P<0.05），但对大理石花纹斑点的分布和结构没有影响（P>0.05）。Retinta 品种比法国品种更瘦，大理石花纹斑点更少且更小（P<0.05）。结果表明，美国农业部大理石花纹评分与图像和化学分析的肌内脂肪之间存在正相关（r=0.183 至 0.465）。
