Use of NPN in dairy cattle feeding

Efficient and safe use of NPN is complex, so an understanding of NPN utilisation is needed in practical dairy cattle feeding and nutrition. NPN is a term that refers collectively to components such as urea, biuret, and ammonium bicarbonate, which are not proteins but can be converted into proteins by microbes in the rumen. Contrary to popular opinion, most dairy cattle receive substantial amounts of NPN. Many natural feeds such as pastures, hays, and especially silages contain an appreciable