| Abstract: | The dynamics of selenium in the blood serum of 20 lambs of the Merino breed, traditionally reared, was followed from birth to weaning at the age of 110 days. Results of the observations revealed that the highest concentration of serum selenium was determined in lambs just after delivery (0.25 ppm) and the level was maintained throughout the period of colostral nutrition. In the period between the 15th and 60th day low selenium values (0.06-0.13 ppm) were recorded, which implies a critical period in relation to the origin of muscular dystrophy. At the end of the observations there appeared a significant selenium content increase in the blood serum of lambs. |
