title: Susceptibility of chickens (Gallus gallus domesticus) to Trichinella patagoniensis.
abstract: Trichinella spp. is a genus of parasites that is widespread all over the world. In Argentina, T. spiralis was for years the only species involved in human and animal outbreaks. During the last decade, T. patagoniensis, a new Trichinella species, was discovered in Argentina. Up to now, this species has only been found in cougars (Puma concolor). Experimental infections in pigs, cats, mice and rats with this new genotype showed that cats and mice were the most susceptible hosts. The aim of the present work was to evaluate the susceptibility of chickens to infection with T. patagoniensis. In order to study the intestinal and muscular phase, and the histopathological changes, 27 Leghorn chickens were inoculated per os with 1000 muscle larvae of T. patagoniensis and were euthanized on days 4, 5, 6, 7, 11, 14, 21, 28 and 35. Adult worms of T. patagoniensis were recovered from the small intestine of chickens up to day 14p.i. Gross examination of small intestine showed a moderate congestive appearance. Microscopically, an inflammatory response with lymphocytes and eosinophils in lamina propria, slight hyperemia, oedema and some haemorrhagic areas were detected. Lesions observed in chickens were similar to those described in different animal species during the intestinal phase. No muscular larvae were recovered from the muscle samples. These results suggest that T. patagoniensis is not capable to complete its entire life cycle in chickens.
authors.affiliation: Cátedra de Parasitología y Enfermedades Parasitarias, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarín 280, C1427CWO Buenos Aires, Argentina. Electronic address: mpasqualetti@fvet.uba.ar.
authors.forename: M
authors.initials: M
authors.lastname: Pasqualetti
authors.affiliation: Cátedra de Parasitología y Enfermedades Parasitarias, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarín 280, C1427CWO Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
authors.forename: F
authors.initials: F
authors.lastname: Fariña
authors.affiliation: Cátedra de Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarín 280, C1427CWO Buenos Aires, Argentina.
authors.forename: E
authors.initials: E
authors.lastname: Falzoni
authors.affiliation: Cátedra de Parasitología y Enfermedades Parasitarias, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarín 280, C1427CWO Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
authors.forename: N
authors.initials: N
authors.lastname: Cardillo
authors.affiliation: Cátedra de Parasitología y Enfermedades Parasitarias, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarín 280, C1427CWO Buenos Aires, Argentina.
authors.forename: T
authors.initials: T
authors.lastname: Aronowicz
authors.affiliation: Departamento de Parasitología, INEI, ANLIS, Dr. Malbrán, Buenos Aires, Argentina.
authors.forename: S
authors.initials: S
authors.lastname: Krivokapich
authors.affiliation: Cátedra de Parasitología y Enfermedades Parasitarias, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarín 280, C1427CWO Buenos Aires, Argentina.
authors.forename: A
authors.initials: A
authors.lastname: Rosa
authors.affiliation: Cátedra de Parasitología y Enfermedades Parasitarias, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarín 280, C1427CWO Buenos Aires, Argentina.
authors.forename: M
authors.initials: M
authors.lastname: Ribicich
mesh_terms: D000818:Animals; D002645:Chickens / Q000276:immunology* / Q000469:parasitology; D004198:Disease Susceptibility; D005260:Female; D007422:Intestines / Q000469:parasitology / Q000473:pathology; D007814:Larva; D008297:Male; D009132:Muscles / Q000469:parasitology / Q000473:pathology; D011201:Poultry Diseases / Q000276:immunology* / Q000469:parasitology / Q000473:pathology; D014234:Trichinella / Q000502:physiology*; D014235:Trichinellosis / Q000276:immunology / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*
keywords: Chicken; Histopathology; Infection; Trichinella patagoniensis