Frequência de anticorpos anti-Neospora caninum em bovinos leiteiros e caninos na região de Gado Bravo, Agreste do Estado da Paraíba, Brasil.

Abstract

Frequency of anti-Neospora caninum antibodies in dairy cattle and dogs on region Gado Bravo, Agreste of Paraíba, Brazil. Among protozoan with veterinary relevance, the Neospora caninum stands out, causer of large economics and productive loses in herd of cattle, being dogs considered as

its final host. This research’s goal is to realize a frequency study of antibodies anti- Neospora caninum in dairy cattle and canines on Gado Bravo region, Agreste State of

Paraíba, Brazil. There were utilized 220 cattle’s serum, mostly of dairy cows and, and 20 from dogs, both of them came form 21 rural properties. The animal’s blood, after collected directly from the external cephalic jugular of cattle and canines, was respectively stored on a box of polystyrene with ice for posterior centrifugation and serum obtainment. The serum have been stored at -20oC until its process. For detecting antibodies IgG anti-N. caninum was realized an Indirect immunofluorescence reaction (RIFI) on Lab of Parasite Illness of Domestic Animals and Transmitted Illness Lab of Federal University of Campina Grande, Campus Patos-PB. The serum witch reacted on dilutions ≥ 1:200 e 1:50, for canines and cattle respectively, has been considered positive, with titles variation from 1:200 to 1:600 on cattle. The antibodies frequency anti- N. caninum found was 12,27% (27/220) on cattle, 57,14% (12/21) on rural properties where at least one animal was positive, and for studied canines was observed a frequency of 25% (5/20). None of studied variables were considered as a risk factor for N. caninim on cattle. Do not inoculate dogs has been considered a variable as risk factor (Oddsratio= 9,33) witch demonstrate proprietor’s lack of care with those animal’s sanity. Concluded that dairy cattle and canines on rural properties of Gado Bravo county area are exposed to infection caused by N. caninum. Aiming minimize economic loses to cattle breeders, more studies must be done to elucidate possible infection causes by protozoan on region cattle.