The invention provides a method for determining bovine
protein turnover
metabolism through combination of [2H2]
tyrosine tracing and
nitrogen equilibrium, and belongs to the technical field of
protein turnover
metabolism determination. Comprising the following steps: S1, a
nitrogen balance determination method: determining the
nitrogen content of cattle feed, excrement and
urine samples; s2, an
isotope tracing determination method: S21, putting an
isotope injection tube and a
blood collection tube into the bovine
jugular vein treatment; s22, collecting a baseline blood sample, injecting [2H2]
tyrosine with an
initial dose, continuously infusing the [2H2]
tyrosine, and collecting a test blood sample in the last period of time of infusing the [2H2] tyrosine; and S23, respectively centrifugally separating the two blood samples to obtain corresponding
plasma, and then measuring the abundance of [2H2] tyrosine in the
plasma of the blood samples. According to the method, the bovine
protein turnover
metabolism is creatively determined by combining [2H2] tyrosine tracing with
nitrogen balance, and the determination method is efficient and low in cost.