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Research Topics Aspects of environmental protection and food safety of pesticides

Aspects of environmental protection and food safety of pesticides

The incidence of malicious poisonings of predator birds has increased markedly during the past years, which particularly endangers the scarce, protected eagles (Imperial eagle, White-tailed eagle). It is shown very well by the increased number of fatal toxicoses in the previous years: e.g. the poisoning cases were higher in 2007 than in the last 10 years, and its number was exceeded in the first quarter of 2008 than in 2007. The toxic baits are used improperly or illegally to control the unwanted pests such as red fox, blackbilled magpie, hooded crow, however, protected and other huntable species such as pheasants, mallards, rabbits, wild boar, deer, follow-deer, red deer cam also ingest these baits. The poisoned animals may have fodd safety importance by consumption of them or can lead to secondary toxicosis of other animals. Experimental studies are performed on broiler chickens and other model animals to investigate the potential poisonous effect and the harmful sources of sublethal amount of pesticides to highly protected and protected birds and other animals, and to human consumer. Aspects of environmental protection and public health of a carbofuran-containing product (Chinofur 40 FW) were studied in our previous experiment. Broiler chickens were treated orally by tube with the sublethal amount of carbofuran (2.5 mg/kg bw). Then the clinical signs were observed and the concentration of carbofuran was measured by gas chromatographic method in the blood, liver and muscle tissue samples, and stomach content of the treated animals after 30 and 90 minutes of the treatment. It can be stated that the sublethal concentration of carbofuran can induce residue of it above the food-toxicological level in the breast muscle at 30-90 minutes without severe clinical signs in the poisoned birds. The detected levels of carbofuran in the breast muscle and stomach content can pose human health hazards and possible ecotoxicological risk for predators as secondary poisonous source
During the further experiments other pesticides will be investigated on chickens and other model animal species to protect the protected animals and human consumers.