The Effect of Selenium Supplementation of Animal Feeds in Norway

Abstract

Selenium supplementation of feeds was introduced in Norway in 1980. The effect of this supplementation on selenium status of animals has been investigated. In general, the supplementation resulted in increased selenium levels in animals as well as in animal products. The supply of selenium seems to be quite satisfactory as regards poultry and slaughter pigs while there seem to be indications of a further increase in the supply in young, rapidly growing pigs, and especially ruminants. Based on food consumption data, the higher levels of selenium represent an increase in human intake of about 5–10 μg selenium per day.