Duckweed have received most attention because of their rapid growth to high biomass, ease of handling and high protein content as compared to other macrophytes.Duckweed represents a readily available source of high quality protein that can be produced indigenously, utilizing unexploited resources such as sewage for its growth medium. It can provide local sources of animal feed and reducing the farmer independence on imported feed.Using duckweed as animal feed keep the foreign currency in local market.