EN
The aim of the study was to determine the selenium concentration in the liver and kidneys of the roe deer from the Western Pomerania (Poland) area according to the season of year. The roe deer were shot in 2003-2008. Samples from 153 roe deer were collected. Selenium concentration was determined spectrofluorometrically. Its mean concentration was 0.71 ±0.64 µg∙g⁻¹d.w. (dry weight) in the liver and 3.09±1.73 µg∙g⁻¹d.w. in the kidneys. The analysis showed selenium deficiency in the kidneys in spring, winter, and summer and in the liver in spring and winter. Autumn was the only period with optimum selenium concentration in both organs. The low selenium concentrations in the liver and kidneys in winter and spring period indicate that their habitats are deficient in this element. It seems necessary to develop a proper prophylactic programme to prevent selenium deficiency in animals during the winter and spring season.