ABSTRACT
This study was aimed at establishing the occurrence of antibodies against neosporosis, brucellosis and leptospirosis in some herds in the Amazônia region. A total of 212 blood samples from buffaloes from the Island of Marajó (n = 135) and in Pará State (n = 77) were collected. A total of 212 serum samples were submitted to the ELISA test for antibodies to Neospora caninum using the kit (HerdeChek – IDEXX Laboratories, USA); 160 serum samples were examined forBrucella sp. using the complement fixation test (CF); 205 samples were examined for Leptospira spp., using the microscopic agglutination test (MAT) with a battery of 27 antigens. The frequency of buffaloes with antibodies against Neospora caninum, Brucella sp. and Leptospira spp. was 88.21%, 3.75% and 80.00% respectively. Statistical analyses were performed by the chi-square test (p < 0.05). It was concluded that there was no variation in the prevalence of antibodies against Neospora caninun, Brucella sp and Leptospiraspp related to the age of the animals, and that the high presence of antibodies against Neospora caninun and Leptospira spp. clearly demonstrates the need for a more effective control of these two diseases. The low brucellosis prevalence might indicate efficient control measures for this disease.
KEY WORDS
Neospora
;
Brucella
;
Leptospira
; buffaloes; Amazônia