  We present the explicit expressions of different pseudo-gauge transformations
for Dirac and Proca fields considering a general interaction term. The
particular case of the interaction of Dirac and Proca fields with a background
electromagnetic field is also studied. Starting from the quantum kinetic theory
with collisions derived from the Wigner-function formalism for massive spin-1/2
and spin-1 particles, we establish a connection between different pseudo-gauges
and relativistic spin hydrodynamics. The physical implications of the various
decompositions of orbital and spin angular momentum are discussed.
