The yielding behavior of the melts of poly(n-butyl)acrylate rubber-particles with various cross-link densities in feed (c x ) is investigated by the creep and recovery tests, and the large amplitude oscillation (LAOS) measurements. The measurements reveal the presence of a yield stress for the onset of plastic flow. The equilibrium shear modulus (G 0 ), which is measured at the small stresses below the yield stress, increases with an increase in c x as G 0 ~ c x 0.5 . The yield strain (g c ≈ 2 × 10 -2 ) is almost independent of c x and temperature. The c x -insensitive g c is qualitatively similar to the earlier results for the highly dense suspensions of micro-hydrogels.