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Urea
Characteristics:
contains nitrogen in a form other than protein (known as
Non-Protein Nitrogen
)
fed to RUMINANTS ONLY
ration that includes urea should also contain a readily available energy source, such as grain
urea can be toxic when fed at excessive levels
can be fed mixed with concentrate or liquid carbohydrate sources
N in urea is combined with carbon skeletons from energy sources by microorganisms to build amino acids and microbial proteins