Abstract
The aim of this study was to compare selenium concentration in the liver and kidneys of wild boar inhabiting industrialized and non-industrialized regions of Poland. Selenium concentrations in organs were determined using spectrofluorometric method. In all the animals studied, Se concentrations were a few times lower than in kidneys which may indicate too low content of this element either in the boar’s diet or the presence of a poorly absorbable form of Se. No statistically significant differences were noted in the mean Se concentrations in the liver and kidney of wild boar from industrialized and non-industrialized areas. In the case of wild boar, it seems that the level of selenium in their organs is more dependent on geochemical conditions in the specific feeding ground than on the scale of regional industrialization, and that this situation is most likely related to the specificity of wild boar feeding.
Highlights
The concentration of selenium in the tissues of free-living animals depends on type of consumed food, and directly or indirectly, on the content of selenium in the environment, especially in the soil (Flueck et al 2012; Pilarczyk et al 2009; Sablik et al 2011; Seremak et al 2011)
A significant positive correlation (p ≤ 0.001) was found between the concentrations of selenium observed between the liver and kidney in the wild boar from both the industrialized and nonindustrialized areas (Table 2)
We have shown that mean Se concentration in the wild boar liver was several times lower than in the kidneys (0.230 vs 1.327 μg/g w.w.), which may be evidence either of an insufficient content of this element in the diet or the presence of a poorly absorbable form of Se
Summary
The concentration of selenium in the tissues of free-living animals depends on type of consumed food, and directly or indirectly, on the content of selenium in the environment, especially in the soil (Flueck et al 2012; Pilarczyk et al 2009; Sablik et al 2011; Seremak et al 2011). Studies on the content of selenium in the environment include among other things measurements of its concentration in the organs of free-living animals related to land ecosystems. The liver plays a most important role in maintaining the selenium homeostasis in an organism, as its cells are responsible for the synthesis and distribution of selenoproteins (including Se-dependent glutathione peroxidase) (Czuczejko et al 2003)
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