Similarly, a significant variation in E. coli antibodies was measured in piglets born from sows receiving 70,150 or 250 mg/kg feed of vitamin E level in sow’s feed, the lower was the need to treat piglets against diarrhea (see Figure 1). Another key moment in the life of the pig is weaning: the pig’s limited digestive capacity at this stage results in a raid decline of vitamin E tissue stores, implying a high susceptibility to suffering oxidation processes. It was demonstrated that the inclusion of vitamin E above 100 mg/kg feed and up to 200 mg/kg in the serum concentration of α –tocopherol ( see Fidure 2).