Acta Veterinaria Brno

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The monitoring of radiocaesium in the ecosystems of particular areas in the Czech Republic is necessary even decades following the Chernobyl nuclear disaster. We report an evaluation of the radioactive contamination of the meat of wild boars hunted in the Novohradské (Gratzen) Mountains in the period of December 2012 to December 2019. Radionuclide ¹³⁷Cs is surveyed for food safety as a source of food chain contamination and a possible risk for human health. Overall, 654 samples of game meat from wild boars were analysed for ¹³⁷Cs activity. The ¹³⁷Cs legal limit of 600 Bq·kg^-1 was exceeded in 238 samples (36.4%) of hunted wild boar meat. Statistical analysis showed that ¹³⁷Cs activities measured in wild boar muscle in March reached lower values compared to the period from June till November (P < 0.05). Higher values were reported in September (P < 0.05) as well as in August (P < 0.01) compared to December. A significant season-based ¹³⁷Cs level was found (P < 0.000). Higher ¹³⁷Cs activities in wild boar in the winter season (November to April) are related to decreasing access to a naturally occurring diet with a lower ¹³⁷Cs content. The keepers of the wild boar in this area were ordered to comply with obligatory emergency veterinary precautions set by the Regional Veterinary Administration to analyse all hunted game meat for radiocaesium. All wild boars with an above-limit ¹³⁷Cs value had to be excluded from the food chain by hunting ground keepers and disposed of safely.

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