Too much or too little Selenium

Just like people, sheep need selenium for good health. But people and sheep both require selenium in extremely small amounts. That’s because selenium can kill. And the difference between healthful amounts and harmful ones is exceptionally small, leading to selenium’s reputation as a “Jekyll and Hyde” nutrient.

Now, studies by Agricultural Research Service scientists at the Poisonous Plant Research Laboratory in Logan, Utah, about 70 miles from Salt Lake City, and at Utah State University-Logan, are providing new details about how lambs absorb, break down, and eliminate selenium.

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