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BIBTEX RIS

Incidence of leptospiral abortion in Brazilian dairy cattle

1999; Elsevier BV; Volume: 40; Issue: 3-4 Linguagem: Inglês

10.1016/s0167-5877(99)00020-3

1873-1716

Hélio Langoni, Luiz Carlos de Souza, Aristeu Vieira da Silva, Maria Cecília Rui Luvizotto, Antônio Carlos Paes, Simone Baldini Lucheis,

Leptospirosis research and findings

We examined dams' paired serum samples and foetal kidneys (histopathologically and attempting leptospiral cultures) from 120 Brazilian Holstein abortions from 10 herds near Sao Paulo, Brazil, in 1996. Leptospiras was isolated from 15 foetuses. The Leptospira interrogans serovar hardjo was obtained from four, pomona from three and wolffi from eight foetuses. Ten of these 15 foetuses showed a four-fold rise in titres between the day of abortion and the second samples taken 15 days later. Fifty-seven other foetuses had histologic evidence of leptospires; 27 of their dams (47%) had four-fold rises in titres. In total, 72 of 120 aborted foetuses had evidence of leptospiral infection.