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Ecotoxicological Relations on A Large Pig Fattening Farm Located in A Lignite Mining Area and Near A Solid Fuel Power-Plant

RASZYK J, DOCEKALOVA H, RUBES J, GAJDUSKOVA V, MASEK J, RODAK L, BARTOS J
Veterinarni Medicina 37, 1992, 435-448

Major contaminants identified in 1983-1984 on a pig fattening farm with an output of 60 000 pigs per annum, located in a lignite mining area and near a solid fuel power plant, were mercury, cadmium, lead, chromium and aflatoxin B1 (Tab. I, II, III, IV). Feed samples were collected from througs to assess the contamination load at feed uptake. Permissible concentrations of mercury, chromium, cadmium, aflatoxin B1, lead and atrazin in the feed were exceeded in 56, 50, 31, 19, 6 and 6 % samples, respectively (Tab. I). Stable dust deposits, in which the contaminants concentrate, (Tab. I) proved to be a suitable material for assessing the type and level of environmental contamination. Permissible concentrations of mercury, cadmium and lead in porcine muscles were exceeded in 65, 51 and 24 % samples, respectively (Tab. III). Corresponding values of mercury, cadmium, lead and aflatoxin B1 in the liver were 27, 27, 16 and 3 %, respectively (Tab. III) and those of mercury, lead and chromium in kidneys 24, 22 and 5 %, respectively (Tab. III). Rather surprisingly, elevated pancreatic concentrations of aflatoxin B1 were found (Tab. IV). Pigs fattened in the contaminated environment (i. e. fed contaminated feed mixtures, inspiring contaminated dust and absorbing percutaneously contaminants form dust deposits on the body surface) showed: 1) Impairment of the genetic apparatus (percentage of aberrant peripheral leucocytes elevated to 6.2 %)


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