HEMATOLOGICAL ASPECTS OF EXPERIMENTAL INFECTION BY Trypanosoma vivax IN SHEEP

Authors

  • Katyane Sousa Almeida Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brasil
  • Fagner Luiz da Costa Freitas Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brasil
  • Renata Lemos Nagib Jorge Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brasil
  • Claudia Aparecida da Silva Nogueira Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brasil
  • Rosangela Zacarias Machado Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brasil
  • Adjair Antonio do Nascimento Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brasil

Keywords:

Sanidade Animal

Abstract

The research evaluated the hematological alterations in sheep infected experimentally with T. vivax strain precedent of Paraiba State. Eight male sheep were used, four in the testimony group and four infected with 105 T. vivax. Blood samples were collected two times before infection and posterior to receiving on days designated. The evaluated parameters were: red blood cell count, total leucocytes, hemoglobin, hematocritic, mean corpuscular volume, mean corpuscular hemoglobin concentration, transferrin and iron. The animals were examined daily by pasitemia. The statistical analysis was carried through using the Wilcoxon test of 5% of probability. The results were: parasites were detected in the blood on the first day after the infection of the intermittent parasite until the end of the experiment, there was a significant decrease in the red blood cell count, hemoglobin and in the hematocritic and in the average mean corpuscular volume, the anaemia, at the end of the observations, were microcitic, normochromic.  The transferrin that were high and iron decreased at the end of the experimental period and observed leucocytosis due to the lymphocytes. The T. vivax strain precedent of Paraiba State occasioned relevant hematological alterations in sheep characterized for anaemia and elevation of leukocytes.

KEY WORKS: Haematologia, sheep, Trypanosoma.

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Published

2008-12-21

How to Cite

ALMEIDA, Katyane Sousa; FREITAS, Fagner Luiz da Costa; JORGE, Renata Lemos Nagib; NOGUEIRA, Claudia Aparecida da Silva; MACHADO, Rosangela Zacarias; NASCIMENTO, Adjair Antonio do. HEMATOLOGICAL ASPECTS OF EXPERIMENTAL INFECTION BY Trypanosoma vivax IN SHEEP. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 9, n. 4, p. 1121–1127, 2008. Disponível em: https://revistas.ufg.br/vet/article/view/1522. Acesso em: 5 dec. 2025.

Issue

Vol. 9 No. 4 (2008)

Section

Veterinary Medicine

License

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

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