Abstract
Glutathione peroxidase activity and selenium concentration were determined in liver and kidney samples from pigs randomly selected at a slaughterhouse. The average selenium concentration in the kidney was approximately four times higher than that in liver, while the glutathione peroxidase levels in the two tissues differed only slightly. A highly significant positive correlation between selenium concentration and glutathione peroxidase activity was found in the liver, but not in the kidney. It is concluded that liver glutathione peroxidase activity may be used as a measure of selenium status in swine. The range of both glutathione peroxidase activity and selenium concentration was considerable, and the possible existence of genetic variations is discussed.
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