Abstract
When injected with 10ml of E-SE twice at a 2 weeks' interval, a pregnant cow showed an increase in a serum total tocopherol level for a short time. When administered orally with 50g/day of a premix, it presented no increase in serum total tocopherol levels. When injected with E-SE, the cow exhibited an increase in serum selenium level earlier and more exactly the cows administered with the premix. Blood glutathione peroxidase (GSH-Px) activities in calves born from cows injected with E-SE were higher than in those born from cows administered with the premix.
premix. In calves injected with 250mg of α-tocopheryl acetate, serum tocopherol levels increased, but serum GOT and CPK activities decreased. In calves injected with 100mg of α-tocopheryl acetate, serum tocopherol levels did not increase, but serum CPK activities increased markedly. Calves showed an increase in serum tocopherol and selenium levels and blood GSH-Px activities, when injected with 2ml of E-SE.
