Question

When discussing nutrition, what does NPN stand for?

(a) Nonprotein nitrogen

(b) Normal protein necessities

(c) Natural protein nitrogen

(d) No protein in nitrogen

The question was posed to me in unit test.

I need to ask this question from Diseases and Deficiency in section Cow Health of Dairy Engineering

Answer 1

Right option is (a) Nonprotein nitrogen

The explanation: Non-protein nitrogen (or NPN) is a term used in animal nutrition to refer collectively to components such as urea, biuret, and ammonia, which are not proteins but can be converted into proteins by microbes in the ruminant stomach.