Activity of glutathione peroxidase (GSH-Px) in the blood of ewes and their lambs receiving the selenium-enriched unicellular alga Chlorella

The effect of supplementation of selenium inorganic and organic forms on the activity of glu - tathione peroxidase (GSH-Px) was investigated for 7-8 months in three groups of ewes (by five animals each) and in born lambs. The basal feed ration contained 55 µg Se, the ewes of experimental group E1 received a supplement of 180 µg Se in sodium selenite, and the ewes of experimental group E2 were administered a supplement of 180 µg selenium bound in the biomass of the alga Chlorella. Control group C was without selenium supplement. The ewes were in the stage of non-pregnancy, pregnancy and lactation during the experiment. The average number of lambs born per ewe was 1.0 in groups C and E1 and 1.8 in group E2. Both forms of selenium supplementation resulted in higher activity of GSH-Px in the whole blood, higher content of Se in the blood serum ( P < 0.001) and milk of ewes ( P < 0.001). Average activity of GSH-Px in the whole