From the article: "When added to cow feed at less than 2% of the dry matter, this particular seaweed completely knocks out methane production. It contains chemi

From the article: "When added to cow feed at less than 2% of the dry matter, this particular seaweed completely knocks out methane production. It contains chemicals that reduce the microbes in the cows’ stomachs that cause them to burp when they eat grass."