Pesquisa de aglutininas anti Leptospira spp em equinos na região da zona da mata e ilha de Fernando de Noronha no estado de Pernambuco

Abstract

This study was aimed to research Leptospira spp agglutinins in horses in the region of the forest area and Fernando de Noronha island in the state of Pernambuco; identifying highest areas of leptospirosis incidence; identifying the serovars that occur more frequently in the studied areas; relating clinical signs with the agglutinins presence in blood serum of equines; observing the reproductive disorders connection with the agglutinins presence in the equines blood serum; relating the presence of rodents and seropositive animals; observing the occurrence of anti leptospiras antibodies at different age groups. It was collected blood from 328 equines of both genders, aging beyound 6 months. After material centrifugation the serum was analyzed by LANAGRO/PE through the microscopic agglutination test. Of the 328 collected samples were found 84 reagents animals in the microscopic agglutination test for leptospirosis. Among which 12 (1.5%) foals, 20 (25.64%) young, 42 (31.11%) adults and 10 (28.57%) senile. Of the 84 reagents animals 69.04% (58) are female and 30.95% (26) are male; 3.75% (3) are Campolina, 2,3% (2) are mestizos, 37,71% (30) are of the breed Quarter horse and 58,33% (49) are Mangalarga Marchador. Among the studied counties Aldeia stood out to present the highest percentage of reagent animals with 32,31% (65) subsequently Pombos with 28,2% (22), Palmares with 23,81% (5), Bonanza with 22,36% (17), Paudalho with 22% (11) and finally Escada with 14,3%(4). The only studied county that did not present any reagent animal was Itambé. Among the 27 researched serovars by the microscopic seroagglutination test for Leptospirosis diagnostic, 10 were found in reagent animals, which, in order of occurrence Icterohaemorrhagiae (58), Shermani (26), Panama (15), Copenhageni (10), Batavie (3), Hardjo (2), Australis (1), Pyrogenes (1), Cynopteri (1) e Canicola (1). In this study 3 of 16 analyzed samples, 10 were considered reagent and 6 were considered non-reagent. 62,5% of samples were positives to the serovar Icterohaemorrhagiae, 37,7% were considered positive to serovar Copenhageni. Realizing this study it’s possible to conclude that leptospirosis in equines occurs in endemic way at the studied area, considering that of 328 analyzed samples 84 (25,62%) were positives to the test. The presence of rodents was very important to the appearance of condition as proved how it was related in all visited property. From this study it was possiblited trace an epidemiologic profile of the leptospirosis in equines belonging to Zona da Mata and Fernando de Noronha island of the state of Pernambuco. Knowing the risk factors involving this condition and which may be useful to treat and prevent, however it’s still needed a extensive study to determinate the reason of the occurrence of certain serovars in some studied regions.