Department of Animal Reproduction Biotechnology and Environmental Hygiene, West Pomeranian University of Technology in Szczecin, Judyma 6 Street, 71-466, Szczecin, Poland.
Biol Trace Elem Res. 2011 Nov;143(2):863-70. doi: 10.1007/s12011-010-8910-z. Epub 2010 Nov 27.
Concentrations of cadmium, lead, iron, zinc, copper, chromium, nickel, aluminium and arsenium were analysed in blood serum of cattle from organic (n=20) and conventional (n=21) farms. The elements were determined by inductively coupled plasma atomic emission spectrometry using an Optima 2000 DV instrument (Perkin Elmer Inc.). Animals from the organic farm were characterised by significantly lower (P<0.01) serum concentrations of Pb, Zn, Fe, Cu, Cr, Ni, As and Al compared to animals from the conventional farm. The concentration of Cd was similar in animals from both organic and conventional farms. The concentration of toxic elements in cattle from organic and conventional farms studied was very low. The trace essential elements were generally within the adequate ranges except Zn and Cu, which were deficient. In organically reared animals, also serum Fe content was below the critical level for diagnosing iron deficiency. Pb was significantly correlated with Cd, Zn, Fe, Cu and Ni. A significant positive correlation between the concentration of Cd and Zn, Cu and Ni concentrations was only observed in cows from the organic farm. The present results suggest that organically raised animals are less exposed to harmful environmental influences such as the environmental pollution with heavy metals. On the other hand, these animals are at a greater risk of mineral deficiency compared to animals kept on conventional farms.
对来自有机（n=20）和传统（n=21）农场的牛血清中的镉、铅、铁、锌、铜、铬、镍、铝和砷浓度进行了分析。使用 Optima 2000 DV 仪器（Perkin Elmer Inc.）通过电感耦合等离子体原子发射光谱法确定了这些元素。与传统农场的动物相比，有机农场的动物血清中的 Pb、Zn、Fe、Cu、Cr、Ni、As 和 Al 浓度显著降低（P<0.01）。有机和传统农场的动物血清中的 Cd 浓度相似。研究中有机和传统农场的牛中有毒元素的浓度非常低。痕量必需元素通常在适当范围内，除了 Zn 和 Cu，它们是不足的。在有机饲养的动物中，血清 Fe 含量也低于诊断缺铁的临界水平。Pb 与 Cd、Zn、Fe、Cu 和 Ni 显著相关。仅在有机农场的奶牛中观察到 Cd 与 Zn、Cu 和 Ni 浓度之间存在显著正相关。本研究结果表明，有机饲养的动物较少受到有害环境影响，如重金属环境污染。另一方面，与传统农场饲养的动物相比，这些动物更容易出现矿物质缺乏的风险。
