Idült májlebeny-csavarodás mezei nyúlban (Lepus europaeus) Magyarországon = First case of chronic liver lobe torsion in a European hare (Lepus europaeus) in Hungary

Gál, János and Shen, Yaoqin and Papp, Antal and Psáder, Roland and Boros, Márton and Tóth, Tamás and Csatári, Dóra (2026) Idült májlebeny-csavarodás mezei nyúlban (Lepus europaeus) Magyarországon = First case of chronic liver lobe torsion in a European hare (Lepus europaeus) in Hungary. MAGYAR ÁLLATORVOSOK LAPJA, 148 (5). pp. 299-308. ISSN 0025-004X (nyomtatott); 3003-9924 (elektronikus)

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Abstract

A szerzők egy 5 éves, fogságban tartott és tenyésztett, a szaporodási ciklusában 3 kölyköt nevelő nőstény mezei nyúlban (Lepus europaeus) állapítottak meg idült májlebeny-csavarodást, és következményes, véres jellegű savófelhalmozódást a hasüregben. Az elváltozást hasi ultrahangvizsgálattal igazolták. A csavarodott májlebeny hasi műtéti feltárást követően reszekálták. A nyúl utókezelését fájdalomcsillapítókkal, antibiotikummal folytatták 7 napon keresztül, miután az állat tünetmentesen gyógyult. | Background: The European hare (Lepus europaeus) is part of the Hungarian small game fauna and lives mainly in open fields and groves. Although it resembles the domestic rabbit in appearance, there are significant differences between the two species in terms of physiology, behavior, and reproduction. Despite these differences, however, there is little difference between the species in terms of their feeding biology and the structure of their digestive organs. Liver torsion, which is common in domestic rabbits, is almost unknown in European hares. One of the smaller lobes on the visceral surface of the liver tends to change position in domestic rabbits, and both acute and chronic forms of this condition are described in the literature. Due to the non-specific symptoms, imaging diagnostic methods (ultrasound examination) are required to make a diagnosis. According to the literature, only surgical intervention can bring about a cure in domestic rabbits. Objectives: A 5-year-old brown hare living in a breeding colony showed signs of uncertain, enteric symptoms, which led to diagnostic tests and, after the alteration was identified, abdominal surgery with hepatic lobectomy. Materials and methods: A 5-year-old female European hare (Lepus europaeus) kept in cage and bred, raising 3 youngs during her reproductive cycle, underwent physical and ultrasound examination. Blood was taken from the hare prior to surgery, and then the twisted and necrotic liver lobe was removed through an abdominal incision under anesthesia. Following surgery, the animal received antibiotic and analgesic therapy. Results and discussion: The authors diagnosed chronic liver torsion and consequent accumulation of bloody serum in the abdominal cavity in a captive-bred female European hare (Lepus europaeus) aged 5 years, which was raising three young during its reproductive cycle. The displaced hepatic lobe was clearly visible on ultrasound examination. Blood tests revealed elevated MCHC, white blood cell count, heteophil granulocyte and lymphocyte persentages. After median laparotomy, 30 ml of bloody serum was aspirated from the abdominal cavity. The liver was twisted and the necrotic caudate process was resected. After flushing the abdominal cavity with sterile physiological saline solution, the surgical wound was closed. The rabbit received ShotapenR (Virbac) 22,000 IU/kg, Neovit B complexR (Kela) 1.5 ml, and MelovemR 5 mg/ml (Dopharma) containing 0.5 mg/kg meloxicam intramuscularly every 3 days. During the operation, physiological saline solution was administered at a rate of 48.5 ml/hour through a cannula placed in the caudal marginal ear vein, to which 2 ml of DuphalyteR (Zoetis) infusion was added. One week after follow-up treatment, the rabbit recovered without symptoms.

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