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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 101, No. 6, 2006, pp. 677-681
Bioline Code: oc06115
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 101, No. 6, 2006, pp. 677-681

 en Prevalence and pathology of the nematode Heterakis gallinarum check for this species in other resources , the trematode Paratanaisia bragai check for this species in other resources , and the protozoan Histomonas meleagridis check for this species in other resources in the turkey, Meleagris gallopavo check for this species in other resources
Beatriz Brener; Rogério Tortelly; Rodrigo Caldas Menezes; Luís C Muniz-Pereira & Roberto Magalhães Pinto

Abstract

The prevalence of infection and associated pathology induced by two helminth and one protozoan species infecting Brazilian turkeys are reported. The intestinal nematode Heterakis gallinarum check for this species in other resources appeared with a prevalence of 70% in the infected birds, without gross lesions when not associated to the protozoan Histomonas meleagridis check for this species in other resources . Histological findings in the ceca were represented by the presence of H. gallinarum worms, intense chronic diffuse inflammatory processes with mononuclear and polymorphonuclear (heterophils) leucocyte infiltrations. The prevalence of the protozoan H. meleagridis associated to H. gallinarum was of 2.5% and microscopic examination revealed a severe inflammatory process in the liver and cecum with the presence of small clear areas with round eosinophilic parasites. Gross lesions were absent in turkeys infected with the renal digenetic trematode Paratanaisia bragai check for this species in other resources ; the parasite was prevalent in 20% of the cases and cross-sections of the kidneys showed a remarkable distension of the collecting ducts with several worms in the lumen. The walls of the ducts presented a discrete heterophilic infiltrate among mononuclear cells.

Keywords
helminths - protozoan - turkeys - Meleagris gallopavo - pathology - Brazil

 
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