Nuclear recoil effect on the $g$ factor of middle-$Z$ boronlike ions

The nuclear recoil correction to the g factor of boronlike ions is evaluated within the lowest-order relativistic (Breit) approximation. The interelectronic-interaction effects are taken into account to the first order of the perturbation theory in $1/Z$. Higher orders in $1/Z$ are partly accounted for by means of the effective screening potential. The most accurate up-to-date values of this contribution are presented for the ions in the range $Z=10-20$.