RESUMEN
During caesarean section of bitches a beginning tissue necrosis of the uterus is often encountered. These alterations mostly require ovariohysterectomy that means the end of breeding life. The aim of this study was to create a model for unilateral hysterectomy during dystocia and to evaluate subsequent fertility. Unilateral cornuectomy was performed in 18 clinically healthy bitches of different ages, breeds, and at different stages of the sexual cyclus. Four bitches were not available for follow-up examinations. Twelve bitches were mated at the first obvious estrus period postoperatively and 10 pregnancies were diagnosed. Nine bitches delivered one to five puppies (mean 3.8) after a gestation period of 63-67 days. The puppies (n=38) were in a very good condition and showed high vitality. Unilateral cornuectomy of the uterus had no adverse effects and postoperative mating revealed pregnancy without complications and normal parturition. In the case of pathological changes in one uterine horn during a caesarean section unilateral hysterectomy seems to be an alternative to ovariohysterectomy.