Vitamine E in het bloed en in de lever bij vaarzen
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Abstract: The effect of supplementation of 3000 IU vitamin E on the concentration of vitamin E in blood and in the liver of heifers around parturition was measured in this experiment. We were also interested in the relation between cholesterol and vitamin E in blood and the relation between vitamin E in blood and in the liver. Starting 8 weeks prior to parturition until 8 weeks after parturition, 9 heifers were supplemented with vitamin E. Another group of 9 heifers were used as a control group. Both groups were held under the same conditions and were fed the same diet. Blood and liver samples were taken and the concentration of vitamin E (blood and liver), cholesterol (blood) and total protein (liver) were measured. The results show that supplementation of 3000 IU of vitamin E increases the concentration of vitamin E in blood and in the liver. It shows that there is a strong correlation between the concentration of vitamin E in blood and in the liver (R2: 0,63; P < 0,01). Supplementation also leads to an increased transport capacity (cholesterol) of vitamin E in blood. Supplementation of vitamin E increases the antioxidative capacity of blood and the liver. Supplementation might also reduce the risk for heifers to get mastitis.