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Seasonal dynamics of ticks (Acari: Ixodidae) on horses in the state of São Paulo, Brazil.
Infestation with A. nitens was much higher in the first year than the second year which may have been related to horse nutritional status and stocking rate, and several climatic variables showed statistical significant correlation with tick counts, but any single significant variable would not explain the tick distribution pattern over the year. Expand
Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity
The results indicate that surveys of horse serum are a useful method of BSF surveillance in areas where humans are exposed to A. cajennense ticks, and no dogs or horses from BSF-nonendemic areas had serologic titers against R. rickettsii antigens, although they were continually exposed to the ticks. Expand
Rickettsial infection in Amblyomma nodosum ticks (Acari: Ixodidae) from Brazil
Rickettsiae were successfully isolated from two ticks, using cultures of Vero cells, and both isolates were molecularly characterised, using the rickettsial genes gltA and htrA and, when possible, also ompA and ompB. Expand
The use of different doses of metamizol for post-operative analgesia in dogs.
Metamizol administered intravenously at 25 or 35 mg kg(-1) can provide adequate post-operative analgesia in bitches undergoing ovariohysterectomy and significantly lower serum cortisol concentrations were observed in the D25 and D35 groups. Expand
Control of equine piroplasmosis in Brazil.
Farms in endemic countries may significantly reduce the prevalence of equine piroplasmosis by establishing measures to control the tick population and treating chronic carrier horses. Expand
Risk factors to tick infestations and their occurrence on horses in the state of São Paulo, Brazil.
From December 1998 to March 1999, 40 stud farms were studied in the state of São Paulo, Brazil, indicating that mowing all the pastures at least once a year can be considered a protective factor against the presence of mixed overgrowth pastures on the farm, and consequently, againstThe presence of A. cajennense on the horses. Expand
Ticks (Acari: Ixodidae) Infesting Birds in an Atlantic Rain Forest Region of Brazil
Brazil has the third richest bird diversity of the world; however, there are few data concerning ticks (Acari: Ixodidae) parazitizing birds, and tick infestations on wild birds from an Atlantic rain forest region of Brazil are reported. Expand
Prevalence of Neospora caninum Antibodies in Dogs From Dairy Cattle Farms in Parana, Brazil
The low prevalence in <1-yr-old dogs compared with the 2- to 3-fold higher prevalence in older dogs suggests postnatal exposure to N. caninum infection. Expand
Canine infection by rickettsiae and ehrlichiae in southern Brazil.
This study evaluated the infection caused by Rickettsia and Ehrlichia agents among dogs in southern Brazil and found dogs that had direct contact with pasture or forest areas were > 2 times more likely to be seroreactive toRickettsia than dogs with no such direct contact. Expand
Ticks (Acari: Ixodidae) from the state of Rondônia, western Amazon, Brazil
From 2000 to 2005, we made several scientific expeditions to determine the ixodid tick fauna of the Brazilian state of Rondônia. Ticks were collected from vegetation, from wild and domestic animalExpand