Abstract
DL-Selenomethionine (DL-SeMet) consists of 40 % selenium, an essential trace element. DL-SeMet. It was tolerated by chickens for fattening at up to 1.5 mg selenium supplemented/kg feed; DL-SeMet is therefore safe for chickens for fattening provided total dietary selenium does not exceed 0.5 mg/kg complete feed; this conclusion is extended to all animal species.
Based on available toxicity studies and previous assessments of closely related compounds, it is concluded that selenium from DL-SeMet does not elicit any adverse effects not expected in a selenium compound. The use of DL-SeMet in animal nutrition is expected to result in a similar increase in selenium deposition in animal tissues/products as that resulting from other sources of SeMet. To ensure consumer safety from consumption of food originating from animals fed DL-SeMet, dietary selenium supplementation from the additive should not exceed a maximum of 0.2 mg Se/kg complete feed.
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