Metabolism and utilisation of non-protein nitrogen compounds in ruminants: a review

Unique stomach physiology allows ruminants to utilise any form of dietary nitrogen (N) as a protein source. Ruminant N requirements can be divided into for microbial fermentation and host amino acids. diets often contain non-protein (NPN) compounds, group components that are not proteins but converted by rumen microbes. Therefore, NPN compounds in ruminant serve alternative sources ammoniacal (NH3-N), which is necessary the synthesis (MCP) rumen. MCP an important component metabolizable and, under certain production conditions, may only acid source tissues products. In this manner, without having enzymes their degradation. The use nutrition increase feed consumption utilisation, well substitution supplements, turn leads more cost-effective production. However, abrupt supplementation or excessive could negatively affect synthesis, digestion, animal On other hand, it lead poisoning release large amounts environment. Knowledge metabolism rumen, optimization its sets conditions presumed beneficial effects diets, adverse on health aim study was summarize recent literature data utilisation ruminants.