Soroprevalência de mormo, anemia infecciosa equina e brucelose do cavalo baixadeiro* The seroprevalence of glanders, equine infectious anemia and brucellosis of equine race "baixadeiro"

Aiming to support measures for control and prevention of infectious diseases in “Baixadeiro” horse, we analyzed 415 blood serum samples by the techniques of agar gel immunodiffusion, complement fixation and buffered acidified antigen for the diagnosis of equine infectious anemia, glanders and brucellosis, respectively. The cases positive for glanders underwent maleinizacao by the official service of agricultural health and reagents animals for brucellosis were re-examined by the technique of 2-mercaptoethanol. Met 81 (19.51 %) animals positive for EIA, two (0.48%) for glanders and four (0.96%) for brucellosis. Among the animals with EIA, 41.97 % were males and 58.03 % females, 7.40 % were between 13 and 24 months, 32.10% from 25 to 48 months and 60.50 % over 48 months old. The EIA was more frequently observed in female animals aged more than 48 months. Equine infectious anemia is undoubtedly the greatest impact on disease of equines in Brazil, but glanders should be a constant concern of the organs of agricultural defense, not because of the number of cases, but because it is a zoonotic disease with high morbidity and lethality. Equine brucellosis deserves concern because the organic weakness that causes the animals, for damages arising from the euthanasia of infected horses, as well as being a source of infection to other household, even for the man species.