Prevalence of Brucellosis, Leptospirosis and Neosporosis in cows with retained placenta in southwest of Parana, Brazil

The aim of this study was to measure the prevalence of Brucellosis, Leptospirosis and Neosporosis in cows with retained placenta in the southwest of Parana, Brazil. Eighty-four dairy cows diagnosed with placenta retention (PR: partial or total presence of fetal membranes in the uterus after 12 hours post partum). Animals were diagnosed using: sorological test of screening Buffered Acidified Antigen for Brucelosis; microscopic agglutination test for Leptospirosis; and indirect immunofluorescence test for Neosporosis. Animals were considered positive when presenting title > 1:100 (Leptospirosis) and 1:200 (Neosporosis). None of the animals with PR was detected with Brucella abortus bacteria; nevertheless 39% (33/84) were reactive to one or more serovars of Leptospira, 15% (13/84) were positive to Neospora caninum, and 4% (4/84) were reactive for Leptospirosis and Neosporosis. In conclusion, data of present study gatter attention to leptospirosis and neosporosis as associated with PR in dairy cows of southwestern Parana.