Selenium-enriched Saccharomyces cerevisiae improves the meat quality of broiler chickens via activation of the glutathione and thioredoxin systems.

However, in contrast, some studies reported different results that organic Se resulted in a highly significant decrease in GPx activity in the plasma, liver, pancreas, breast muscle, and erythrocytes, as compared with inorganic Se ( Leeson et al., 2008 ; Wang et al., 2011a ; Sun et al., 2011 ).

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