  We calculate all transport coefficients of second order transient
hydrodynamics in two effective kinetic theory models: a hadron-resonance gas
and a quasiparticle model with thermal masses tuned to reproduce QCD
thermodynamics. We compare the corresponding results with calculations for an
ultrarelativistic single-component gas, that are widely employed in
hydrodynamic simulations of heavy ion collisions. We find that both of these
effective models display a qualitatively different normalized bulk viscosity,
when compared to the calculation for the single-component gas. Indeed,
$\zeta/[\tau_{\Pi}(\varepsilon_{0} + P_{0})] \simeq 16.91(1/3-c_{s}^{2})^{2}$,
for the hadron-resonance gas model, and $\zeta/[\tau_{\Pi}(\varepsilon_{0} +
P_{0})] \simeq 5 (1/3-c_{s}^{2})$ for the quasiparticle model. Differences are
also observed for many second-order transport coefficients, specially those
related to the bulk viscous pressure. The transport coefficients derived are
shown to be consistent with fundamental linear stability and causality
conditions.
