CLINICAL AND HEMATOLOGIC PARAMETERS OF CAPRINE REPRODUCERS NATURALLY INFECTED BY CAPRINE ARTHRITIS ENCEPHALITIS VIRUS DURING THE TRANSITION FROM THE DRY TO THE RAINY SEASON IN THE STATE OF CEARÁ, BRAZIL

N.R.O. Paula A Andrioli J.F.S. Cardoso F.M.L. Sousa K.C. de Souza R.R. Pinheiro F.S.F. Alves M.F.S. Teixeira About the authors

ABSTRACT

Caprine arthritis encephalitis (CAE) is a specific infectious disease of caprines. It usually leads to a chronic disease, being characterized by a long incubation period and a slow and progressive clinical evolution. The aim of this work was to evaluate the clinical and hematologic parameters of bucks naturally infected by the CAE virus, as well to verify the influence of the transition from the dry to rainy season in the state of Ceará, Brazil, on these parameters. The work was carried out at the Brazilian Agricultural Research Corporation – Goats in Sobral, state of Ceará. A total of 8 bucks positive for CAE were used, maintained in a semi-intensive raising system and submitted to biweekly clinical exams and complete blood count monthly, from September 2006 to February 2007. The data were expressed as means and analyzed using the software Staview with 5% of probability. A significant increase of the heart rate was observed during the rainy station (90.09 ± 16.21 bpm). An articular clinical index superior to 7, considered as a clinical indication of arthritis, was verified in 3 animals during the experiment, although the climatic season did not influence this parameter. A significant increase was observed in the absolute count of eosinophiles (90.09 ± 16.21 /µL) and monocytes (100.91 ± 21.12 /µL) during the rainy season. We conclude that the climatic season did not alter the physical parameters of the CAEV-infected bucks studied in this experiment in the north of the state of Ceará, Brazil. However, the rainy station provides climatic and environmental conditions that alter the monocyte and eosinophile count of these bucks.

KEY WORDS
Caprine; CAEV; clinical and hematologic parameters

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