The Methionine Task Force of the U.S. National Organic Standards Board recently petitioned for an extension of the deadline on using synthetic methionine in organic laying-hen diets to 2015.


The petition placed an upper intake limit of four pounds of 100% synthetic methionine over the productive life of a hen. The board’s livestock committee recommended that synthetic methionine supplements remain on the organic program’s National List of Allowed Substances with a step-down rate of use.