Estimation of the Relative Bioavailability of Inorganic Selenium Sources for Poultry 1. Effect of Time and High Dietary Selenium on Tissue Selenium Uptake

Abstract An experiment was conducted with male broiler-type chicks to study the effect of time and high dietary Se concentration on tissue Se uptake. A basal corn-soybean meal diet (.2 mg/kg Se, DM basis) was supplemented with 0, 3, 6, or 9 mg/kg Se (as-fed basis) as Na2 SeO3 and fed ad libitum for 1, 2, or 3 wk. No toxic effect of Se was observed as expressed by mortality; however, there was a reduction in daily feed intake (P