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http://dx.doi.org/10.5352/JLS.2010.20.5.717

Contamination Analysis of Heavy Metals in Commercial Feed for the Production of Safe-Animal Products  

Kang, Jung-Mi (Department of Food Technology, Graduate School of Agriculture and Animal Science, Konkuk University)
Cho, Sang-Buem (Department of Animal Production and Environment Science, Konkuk University)
Kim, Soo-Ki (Department of Animal Production and Environment Science, Konkuk University)
Lee, Sang-Suk (Department of Animal Science and Technology, Sunchon University)
Lee, Si-Kyung (Department of Food Technology, Graduate School of Agriculture and Animal Science, Konkuk University)
Publication Information
Journal of Life Science / v.20, no.5, 2010 , pp. 717-722 More about this Journal
Abstract
The safety of animal feed was evaluated by analyzing the levels of heavy metals (Pb, Cr, Cd, As, Se and Ag) in cattle, swine, and poultry feeds and the levels of Cu, Zn and P in swine feed. Feeds used in the analysis were produced in Korea from 2004 through the first half of 2007. The results of the study revealed that, with the exception of Cd, the concentration of heavy metals were much lower than the Minimum Regulation Levels (MRLs). However, the Cd concentration exceeded the MRL in 1 of 987 swine feed samples in 2005, as well as in 4 of 1,239 swine feed samples and 1 of 778 poultry feed samples in 2006. The levels of Cu, Zn and P in swine feed were compared with the swine breeding standard. The results of this analysis revealed that the Cu concentrations in the samples exceeded the MRL for growing pigs by 0.97%, and that for finishing and breeding pigs by 9.9%. In addition, the Cu levels (80.98 ppm for piglet, 44.82 ppm for growing pigs, 19 ppm for finishing and breeding pigs) in swine feed showed higher levels compared to 3.5-6.0 ppm, which is the Cu requirement for swine. Furthermore, the results of the Zn analysis revealed that the samples exceeded the MRL for piglets, growing pigs, and finishing and breeding pigs by 5.7%, 7.7%, and 9.3%, respectively. Finally, the average concentration of P in swine feed was 0.74%, which is almost the same as the phosphate requirement for swine.
Keywords
Feed; heavy metals; minimum regulation levels (MRL);
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