Cattle Feed Additives Lower Greenhouse Gas Emissions - Part Two Tuesday Apr 6th, 2021 News Reporter WIth California Ag Today, I’m Tim Hammerich. Researchers at UC Davis are finding that a seaweed-based feed additive can drastically reduce greenhouse gas emissions from cattle. One of the nice things about this approach, is it does not have to replace any of the normal ration these cattle are fed. Ermias Kebreab is the associate dean and professor of animal science at UC Davis. Kebreab… “The ration is going to be exactly the same. There's nothing changing in the ration because we are giving the feed additive in such a small quantity. It has no contribution to the nutrition of the diet.”