González-Martin I, González-Pérez C, Hernández Méndez J, Marqués-Macias E, Sanz Poveda F
Departamento de Quı́mica Analı́tica, Nutrición y Bromatologı́a, Facultad de Quı́mica,Universidad de Salamanca, Plaza de la Merced s/n, Salamanca 37008 Spain.
Meat Sci. 1999 Aug;52(4):437-41. doi: 10.1016/s0309-1740(99)00027-3.
We describe a method based on isotope analysis (δ(13)C) for characterization and differentiation of Iberian pork meat as a function of the diet of the animal. Using adipose tissue, it is possible to classify unknown samples in group of animals designated "acorn-fed", "recebo=mixed-fed" and "feed raised" according the δ(13)C value obtained, from the calibration straight line of y=-22.12-0.35x, with a correlation coefficient r=0.982 and s=0.1‰; where y=δ(13)C and x=arrobas of acorn and range forage received by the animals during the fattening period. Stress should be placed on the economic and industrial importance of Iberian-breed swine because the market prices of Iberian swine products depends on the classification of the animals according to the type of feeding regimen which they are subjected to.
我们描述了一种基于同位素分析（δ(13)C）的方法，用于根据动物的饮食来表征和区分伊比利亚猪肉。利用脂肪组织，根据从校准直线y = -22.12 - 0.35x获得的δ(13)C值，可以将未知样本分类到指定为“橡子喂养”、“recebo=混合喂养”和“饲料饲养”的动物组中，相关系数r = 0.982，s = 0.1‰；其中y = δ(13)C，x = 动物育肥期所摄入的橡子和粗饲料的阿罗瓦数。应强调伊比利亚品种猪的经济和产业重要性，因为伊比利亚猪产品的市场价格取决于根据其所接受的喂养方式对动物进行的分类。
