I'm pretty sure that the use of surgical masks during surgery has nothing to do with one's sex. However it has everything to do with keeping yourself safe from blood borne pathogens. So the answer to your question is yes, vets, whether male or female, wear masks during surgery.
All surgeons put on surgical masks, shoe covers, surgical caps, sterile gowns and the sterile gloves irrespective of gender. The surgical or procedure masks are usually worn to help in trapping bacteria in aerosols and liquid droplets from the doctor's mouth and nose.