Parazitozele hepatice ca factori declanşatori ai colelitiazei la ovine

  • Nicolae NAFORNIȚĂ Universitatea Agrară de Stat din Moldova
  • Ilie CERCEL Universitatea Agrară de Stat din Moldova

Abstract

The main objective was to investigate the cases of cholelithiasis in sheep and to identify the etiological and pathogenic links between the formation of calculi and the parasitism in sheep with parasitic diseases: fasciolosis, dicrocoelosis and echinococcosis/hydatidosis or other pathological conditions in the liver (liver abscesses). Another purpose was to describe macroscopic and topographic criteria of the calculi/uroliths in the affected liver. In total, the liver was examined in 175 sheep, from 2 to 5 years old, clinically healthy, randomly selected and slaughtered. All visible concretions detected in the ducts and gall bladder were considered as calculi/uroliths (stones). The macroscopic examination of the liver of slaughtered sheep revealed that, 46 organs were normal, 28 were infested with Fasciola hepatica, 32 were infested with Dicrocoelium dendriticum, 25 presented a mixed infestation by D. dendriticum and F. hepatica, 20 organs had hydatid cysts and were infested with Echinococcus granulosus larvae and had liver abscesses, and in 24 organs there were F. hepatica, D. dendriticum and E. granulosus larvae. Biliary calculi were detected in 40 examined organs. 16 livers had pigment stones and the stones in 24 livers were formed of cholesterol. The incidence of cholelithiasis was significantly higher in the organs infested with trematodes compared with the rest of the detected pathological conditions, and the infestation with F. hepatica and D. dendriticum proved to be major risk factors for the appearance of cholelithiasis in sheep.


Key words: Sheep; Liver; Bile duct; Cholelithiasis; Aetiology; Liver parasitoses.


Rezumat. Obiectivul principal urmărit a fost investigarea cazurilor de colelitiază la ovine și identificarea legăturilor etiologice și patogenice între formarea calculilor și bolile parazitare la ovine: fascioloza, dicrocelioza și echinococoză/hidatidoză sau alte stări patologice la ficat (abcese hepatice). Au fost descrise unele criterii macroscopice și topografice ale calculilor în ficatul afectat. În total s-a examinat ficatul la 175 de ovine, cu vârsta de la 2 până la 5 ani, clinic sănătoase, alese aleatoriu și sacrificate. Toate concrementele vizibile din canale și vezica biliară depistate au fost considerate calculi (pietre). În urma unui examen macroscopic al ficatului ovinelor sacrificate s-au constatat 46 de organe normale, 28 de organe parazitate cu Fasciola hepatica, 32 parazitate cu Dicrocoelium dendriticum, 25 de organe cu o formă mixtă de D. dendriticum și F. hepatica, 20 de organe cu chisturi hidatice, parazitism cu E. granulosus larvae și abcese hepatice, 24 de organe cu F. hepatica, D. dendriticum și E. granulosus larvae. Calculi au fost depistați la 40 de organe examinate, 16 calculi fiind de origine pigmentară și 24 din colesterol. Incidența colelitiazei a fost semnificativ mai mare la organele infestate cu trematode comparativ cu restul situațiilor patologice depistate, iar infestarea cu F. hepatica și D. dendriticum s-a dovedit a fi un factor de risc major pentru apariția colelitiazei la ovine.


Cuvinte-cheie: Ovine; Ficat; Canal biliar; Colelitiază; Etiologie; Parazitoze hepatice.

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Published
2021-03-23
How to Cite
NAFORNIȚĂ, Nicolae; CERCEL, Ilie. Parazitozele hepatice ca factori declanşatori ai colelitiazei la ovine. Stiinta agricola, [S.l.], n. 2, p. 119-125, mar. 2021. ISSN 2587-3202. Available at: <https://sa.uasm.md/index.php?journal=sa&page=article&op=view&path%5B%5D=723>. Date accessed: 12 apr. 2021.
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