To evaluate the applicability of single-incision laparoscopic ovariectomy ( SILOVE ) in cats using a single-incision laparoscopic port ( SILP ) ; to compare surgical time , complications , and postoperative pain after SILOVE using a LigaSure ( SILOVE-LS ) or extracorporeal suture ( SILOVE-ECS ) , and open ovariectomy ( open-OVE ) .