EXPERIMENTAL INFECTION BY Trypanosoma vivax IN GOATS

Authors

  • Jael Soares Batista Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brasil
  • Andréia Freitas de Oliveira Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brasil
  • Elba Fonseca Barbosa Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brasil
  • Felipe Farias Pereira da Câmara Barros Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brasil
  • Francisco David Nascimento Sousa Universidade Federal Rural do Semi-Árido (UFERSA), Mossoró, Rio Grande do Norte, Brasil

Keywords:

Sanidade Animal

Abstract

Four goats were infected intravenously with 1.0 mL of cattle blood containing about 1.25 x 105 Trypanosoma vivax derived from spontaneous outbreak in cattle at Catolé do Rocha city, Paraíba, Brazil. Other four goats were used as controls. Parasitemia and body temperature were determined daily for 40 days. Animals were weighted each 7 days, and blood samples for blood cells counts were collected each 5 days. It was obtained a sample of liquor from each animal before death; cerebrospinal fluid samples were submitted to biochemical and cytological evaluations, density determination and parasite detection. A positive correlation was found between body temperature and parasitemia in infected animals. These animals presented anemia, leukopenia, hypoglycemia, decreased serum levels of total proteins and cholesterol, and nervous symptoms. Examination of cerebrospinal fluid resulted in decrease of glucose levels and increase in lactate dehydrogenase, cell counts and presence of the parasite. At necropsy it was found pale carcass, generalized infartation of lymphonodes, pulmonary edema, and liquid accumulation of pericardium. Histological changes were characterized by interstitial pneumonia, miocarditis, cardiac fibrosis, meningitis, and encephalitis. All observed changes confirm patogenicity of T. vivax.

KEY WORDS: Experimental infection, trypanosomiasis, patogenicity.

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Published

2008-10-15

How to Cite

BATISTA, Jael Soares; OLIVEIRA, Andréia Freitas de; BARBOSA, Elba Fonseca; BARROS, Felipe Farias Pereira da Câmara; SOUSA, Francisco David Nascimento. EXPERIMENTAL INFECTION BY Trypanosoma vivax IN GOATS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 9, n. 3, p. 673–685, 2008. Disponível em: https://revistas.ufg.br/vet/article/view/544. Acesso em: 5 dec. 2025.

Issue

Vol. 9 No. 3 (2008)

Section

Veterinary Medicine

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Copyright (c) 2008 Brazilian Animal Science/ Ciência Animal Brasileira

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