Czech J. Anim. Sci., 2008, 53(11):472-478 | DOI: 10.17221/342-CJAS

The effect of humic acid on mercury accumulation in chicken organs and muscle tissues

Z. Zralý, B. Písaříková, M. Navrátilová
Veterinary Research Institute, Brno, Czech Republic

Forty female chickens were allocated to four groups of ten birds each. The control group (K) was fed a basal diet without supplementation. The second control group received a basal diet with humic acid (HA) at a dose of 0.5 g per chicken/day. The first experimental group was fed the basal diet with methyl-mercury (MeHg) at a dose of 0.02 mg per chicken/day and the group of chickens MeHg + HA received 0.5 g HA per chicken/day. After slaughter, mercury levels were assessed in liver, kidney, brain and muscle tissue samples. After 10-day treatment of the chickens with MeHg, significantly increased (P < 0.001) Hg concentrations were detected in all examined tissues in comparison with the groups K and HA. The average concentrations in liver, kidneys, brain and muscle tissues were 424, 398, 81.6 and 79.2 µg Hg/kg, respectively. After concurrent treatment with HA and MeHg, Hg concentrations were lower by 20.6%, 23.8%, 23.0% and 18.6% in liver, kidneys, brain and muscle tissues (P < 0.001). Biological accumulation of Hg was 25.5% and 20.4% in MeHg and MeHg + HA groups, respectively.

Keywords: methylmercury chloride; liver; kidney; brain; muscle tissue; bioavailability

Published: November 30, 2008  Show citation

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Zralý Z, Písaříková B, Navrátilová M. The effect of humic acid on mercury accumulation in chicken organs and muscle tissues. Czech J. Anim. Sci. 2008;53(11):472-478. doi: 10.17221/342-CJAS.
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