The effect of increased soil contamination with heavy metals on their content in some rabbit tissues
2000
Rous, P. | Jelinek, P. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic))
Studies were aimed at transfer of cadmium, lead, mercury and chromium within the soil - plant - animal system. A complete feed mixture was formulated using barley, wheat and clover-grass hay produced on contaminated lands; it was given to rabbits between days 41 and 125 of age. Contaminated soil contained 13 mg/kg Cr, 0.8 mg/kg Cd, 65 mg/kg Pb. A part of rabbits were slaughtered at 125 days of age, and liver, kidney and muscle samples were taken. The remaining rabbits were left for reproduction and the young were slaughtered at the age of 1 and 30 days. Liver, kidney and muscle samples were also taken. Cd content in rabbit liver increased to 107 microg/kg at 125 days of age (P0.01) as a result of experimental diet (control 55 microg/kg Cd). Cd concentration in the kidneys of contaminated 125 days old rabbits (P0.01) increased to 543 microg/kg (control 280 microg/kg Cd) while Pb concentration (P0.01) rose to 71 microg/kg (control 44 microg/kg Pb). A higher amount of cadmium (P0.05) was determined in the liver of the thirty-day rabbit young (48 g/kg - control 16 g/kg). Chromium contents in the tissues showed high variability.
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