2013 Report

Use of Selenium-Rich Coproducts to Manage Selenium Deficiency in Oregon Sheep

Prepared by J.B. Taylor

USDA, ARS, US Sheep Experiment Station

GENERAL PROTOCOL OF EVENTS: The selenium test product, abbreviated SeCO, was successfully tested at 3 locations; a forth location agreed to test the product, but never confirmed using the product nor collected the required test samples. Locations A and B were typical shed-lambing systems, while Location C was a pasture lambing system. SeCO was manufactured using a natural selenium-rich, high-protein forage as the main ingredient. This product was pelleted and contained 16% crude protein, 67% total digestible nutrients, and 6ppm selenium (dry matter basis). SeCO was fed for 22, 20, and 40 days at Locations A, B, and C respectively.