TY - SER AU - Silva,R.C.da AU - Costa,V.M.da AU - Shimabukuro,F.H. AU - Richini-Pereira,V.B. AU - Menozzi,B.D. AU - Langoni,H. TI - Frequency of Leptospira spp. in sheep from brazilian slaughterhouses and its association with epidemiological variables KW - OVINO KW - LEPTOSPIROSE KW - ABATEDOURO KW - VACINAÇÃO KW - EPIDEMIOLOGIA ER -