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In this study, the effects of the organic and inorganic form of selenium, in  the diet for finishing beef cattle, were investigated. Sell-Plex produced by  American firm Alltech as a source of organic selenium with selenium  concentration of 2000 mg/kg was used. The source of inorganic selenium was  sodium selenite. The trial was conducted on Simmental fattening cattle in the  final stage in the free housing system and it lasted 60 days. Selenium  content in control and trial group (m. longissimus dorsi) was 78.65 and  125.03 μg/kg (P<0.01), in kidneys 855.52 and 1026.04 μg/kg(P <0.001); in  liver 453.13 and 534.64 μg/ kg(P<0.01) and in spleen 308.44 and 383.62 μg/kg  (P<0.001), respectively. There were no differences in main carcass  characteristics, share of some tissues in the round and three rib chops,  chemical composition and meat quality of m. longissimus dorsi  (P>0.05).Considering the higher storage of organic selenium in meat and  internal organs of the fattening cattle with respect to the inorganic form,  it was concluded that the selenium supply in organic form has a better  bioavailability. Inclusion of organic selenium into the diet in the final  stage of fattening cattle and its deposition in meat and internal organs is a  good and easy way to get meat with functional foods properties that in  addition to nutritional value should positively affect human health.

Producing of beef meat enriched with organically bound selenium