Toxicology : Accumulation of Metals in the Liver and Kidneys of Cattle from Agricultural Areas in Lusaka, Zambia

  • YABE John
    Laboratory of Comparative Pathology, Graduate School of Veterinary Medicine, Hokkaido University Laboratory of Comparative Pathology, Graduate School of Veterinary Medicine, Hokkaido University, N18 W9 Kita-ku, Sapporo, Hokkaido 060–0818, Japan
  • NAKAYAMA Shouta M. M.
    Laboratory of Toxicology, Graduate School of Veterinary Medicine, Hokkaido University Laboratory of Toxicology, Graduate School of Veterinary Medicine, Hokkaido University, N18 W9 Kita-ku, Sapporo, Hokkaido 060–0818, Japan
  • IKENAKA Yoshinori
    Laboratory of Toxicology, Graduate School of Veterinary Medicine, Hokkaido University Laboratory of Toxicology, Graduate School of Veterinary Medicine, Hokkaido University, N18 W9 Kita-ku, Sapporo, Hokkaido 060–0818, Japan
  • MUZANDU Kaampwe
    Biomedical Sciences Department, School of Veterinary Medicine, The University of Zambia Biomedical Sciences Department, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
  • ISHIZUKA Mayumi
    Laboratory of Toxicology, Graduate School of Veterinary Medicine, Hokkaido University Laboratory of Toxicology, Graduate School of Veterinary Medicine, Hokkaido University, N18 W9 Kita-ku, Sapporo, Hokkaido 060–0818, Japan
  • UMEMURA Takashi
    Laboratory of Comparative Pathology, Graduate School of Veterinary Medicine, Hokkaido University Laboratory of Comparative Pathology, Graduate School of Veterinary Medicine, Hokkaido University, N18 W9 Kita-ku, Sapporo, Hokkaido 060–0818, Japan

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タイトル別名
  • Accumulation of Metals in the Liver and Kidneys of Cattle from Agricultural Areas in Lusaka, Zambia

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Intensive agricultural practices are recognized as significant sources of metal pollution in soils and pasture. This study investigated metal contamination in cattle offal from an agricultural area in Zambia, where inorganic fertilizers, agricultural lime, and pesticides are routinely applied. The highest median values (mg/kg, wet weight) of Cu (40.9), Zn (35.2), Cr (1.35) and Ni (0.594) were recorded in the liver, whereas the highest median values of Pb (0.061) and Cd (0.049) were found in kidneys. Maximum levels of Hg, As and Co were under 0.2 mg/kg in both organs. Pb and Cd did not exceed the benchmark values in cattle offal for human consumption and did not pose immediate health risks. Concentrations of Ni and Cr could present a public health concern. Monitoring of metal accumulations in offal of cattle, not only from well-known polluted environments but also agricultural areas, should be done regularly for the health of human consumers.

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