Occurrence of gastrointestinal parasites in dogs (Canis familiaris) with acute diarrhea from metropolitan region of Londrina, Parana State, Brazil

Fábio Augusto Galli dos Santos, Milton Hissashi Yamamura, Odilon Vidotto, Pedro Luiz de Camargo


One hundred and fifty fecal samples from dogs with acute diarrhea (Group 1) and from 50 dogs without diarrhea (Group 2) were collected and analyzed at the Veterinary Teaching Hospital of the State University of Londrina, between October, 2004 and October 2005. From the positive samples (29.3%) of Group 1, 72.7% were infected by only one agent, while 27.3% had mixed infection. The following genera were observed by coproparasitologic evaluation: Giardia sp. (9.3%), Ancylostoma sp. (7.3%), Cystoisospora (7.3%), Entamoeba sp. (6.7%), Toxocara sp.(4%), Pentatrichomanas hominis (3.3%), and Trichuris vulpis (1.3%). From the 50 animals without diarrhea, six (12%) were positive by coproparasitologic evaluation: two (4%) for Ancylostoma sp., three (6%) with Giardia sp., and one (2%) for both Ancylostoma sp. and Cystoisospora sp. There was a significant relationship between infection and diarrhea (P = 0,005), age and infection (P < 0,001); but not between the occurrence of gastrointestinal parasites in males and females (P = 0.08). The number of infected pure breed dogs was significantly higher than their mixed breed counterparts (P = 0.01). The results show the importance of realizing periodic parasitological examination in dogs with or without diarrhea for the specific treatment and the implementation of prophylaxis and control methods.




Dogs; acute diarrhea; gastrointestinal parasites; helminthes; protozoa

DOI: http://dx.doi.org/10.5433/1679-0359.2007v28n2p257

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional