Vet Med - Czech, 2025, 70(12):432-441 | DOI: 10.17221/31/2025-VETMED

Evaluation of hydroalcoholic extract of Licorice (Glycyrrhiza glabra L.) root on treatment of experimentally induced peritonitis in New Zealand male rabbitsOriginal Paper

M Ahmadi¹, I Nowrouzian², M Norbakhsh¹, M Yadegari¹, M Jafarian Dehkordi³

¹ Department of Veterinary Clinical Sciences,Shk.C., Islamic Azad University, Shahrekord, Iran

² Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran

³ Department of Clinical Pathology, Shk.C., Islamic Azad University, Shahrekord, Iran

This experimental study evaluated the therapeutic potential of a liquorice-derived hydroalcoholic extract in managing experimentally induced peritonitis in New Zealand rabbits. The animals were randomly divided into six groups (n = 6): one control group, one negative control group (infected but untreated), three treatment groups that received the liquorice-derived extract at 0.5, 1, and 2 g/kg, and one positive control group treated with enrofloxacin. The confirmation of peritoneal infection relied on histopathological and radiographic tests. The effect of the liquorice extract on the peritoneal infection was evaluated using biochemical, haematological, and ultrasound analyses across the groups. The ultrasound examination, along with the haematological and biochemical evaluation on the 20^th day after induction, showed significant differences between the groups. The results demonstrated that higher doses of 1 g/kg and 2 g/kg were more effective than the lower dose of 0.5 g/kg. The haematological and biochemical analyses revealed significant differences in several variables (including WBC, neutrophils, fibrinogen, and liver enzymes) between the treated and control groups, with the most pronounced improvements observed in the group receiving 2 g/kg of liquorice extract, suggesting a dose-dependent therapeutic effect. The administration of a hydroalcoholic extract of liquorice at different doses, along with the standard treatment with enrofloxacin, affected various haematological and biochemical variables in the context of peritoneal infection management. In conclusion, the effectiveness of the liquorice-derived extract is dose-dependent and could be used as an effective therapeutic agent in peritoneal infections in New Zealand rabbits. These findings showed that the liquorice-derived extract effectively improves the local inflammatory and structural changes associated with peritoneal infection without adversely affecting systemic biochemical homeostasis.

Keywords: liquorice extract; peritonitis; rabbits; treatment

Received: April 19, 2025; Revised: September 30, 2025; Accepted: October 2, 2025; Published: December 31, 2025  Show citation