Abstract
The enzootic bovine leucosis (EBL) and bovine leptospirosis are infectious diseases that have a negative economic impact on the cattle industry. Diagnosis is carried out by detection the specific antibodies. There are not studies correlating either serological results for EBL and leptospirosis in cattle. The objective of this study was to investigate the presence of an association between the serology results for EBL and Leptospira antibodies. Were tested 200 serum samples from adult cows aged over 24 months of which were 100 seropositive and 100 seronegative for antiLeptospira spp. antibodies by microscopic agglutination test (MAT). Agar Gel Immunodiffusion Test (AGID) was carried out to detection of anti-EBL antibodies in all these 200 sera samples. Were detected anti-EBL antibodies in 30% (60/200; 95% CI: 24.8% - 35.2%) of tested sera samples. Statistical difference (P <0.05) was observed between EBL seropositivity among Leptospira seropositive cows (37%; 95% CI: 27.5% -46.5%) and seronegative cows (23%; 95% CI: 14.8% -31.3%). The cows exposed to Leptospira infection were 1.97 more likely to be seropositive for EBL. The results suggest the existence of a positive association between seropositivity for EBL and bovine leptospirosis.
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