Université de Paris-Est, Anses, Laboratory for food safety, Maisons-Alfort 94700, France.
Ifip-institut du porc, Pôle Techniques d'élevage, Toulouse 31500, France.
Meat Sci. 2018 Jul;141:28-35. doi: 10.1016/j.meatsci.2018.02.008. Epub 2018 Feb 9.
This study assesses the impact of the farming system on the levels of copper, zinc, arsenic, cadmium, lead and mercury in pig tissues from three types of production (Organic (n = 28), Label Rouge (n = 12) and Conventional (n = 30)) randomly sampled in different slaughterhouses. All the concentrations were below regulatory limits. In muscles, Cu, Zn and As were measured at slightly higher levels in organic samples but no differences between organic and Label Rouge was observed. Livers from conventional and Label Rouge pig farms exhibited higher Zn and Cd contents than the organic ones, probably due to different practice in zinc or phytase supplementation of fattening diets. Principal component analysis indicated a correlation between Cu and As concentrations in liver and carcass weight, and between Zn and Cd liver levels and lean meat percentage. The linear discriminant analysis succeeded in predicting the farming process on the basis of the lean meat percentage and the liver Cd level.
本研究评估了三种生产方式（有机（n=28）、Label Rouge（n=12）和常规（n=30））的猪组织中铜、锌、砷、镉、铅和汞水平的养殖系统的影响。所有浓度均低于法规限量。在肌肉中，有机样本中的 Cu、Zn 和 As 含量略高，但有机和 Label Rouge 之间没有差异。常规和 Label Rouge 猪场的肝脏中 Zn 和 Cd 含量高于有机猪，这可能是由于在育肥日粮中添加锌或植酸酶的做法不同。主成分分析表明，肝脏和胴体重量与 Cu 和 As 浓度之间，以及肝脏 Zn 和 Cd 水平与瘦肉百分比之间存在相关性。线性判别分析成功地根据瘦肉百分比和肝脏 Cd 水平预测了养殖过程。
