Abstract
Trace metals may be supportive to mammalian reproduction but also reveal certain toxicities. The present study investigated the content of selected metals (Ca, Cd, Cu, Mn, Mg, Ni, Pb, Zn) in uterine and testicular tissue of free-ranging and household cats and its relation with hair metal status, cats' age, weight, physical activity, diet and inhabited environment. Free-rangers and cats not fed by humans were characterized by higher concentrations of essential metals in their reproductive tissues as well as increased levels of toxic elements, particularly Cd and Ni. No difference in metal status was found for household individuals fed on different varieties of commercial food. Cats inhabiting urbanized areas were characterized by higher Pb levels in their reproductive system. Feline hair was found to be less, if at all, susceptible to environmental, lifestyle and dietary variables and most importantly, did not reflect a metal burden in reproductive tissues.
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