The effects of the leptospiral infection on reproductive performance in sows - Azevedo, Sérgio Santos de; Soto, Francisco Rafael Martins; Morais, Zenaide Maria de; Pinheiro, Sonia Regina; Batista, Carolina de Souza Américo; Vuaden, Erlete Rosalina; Vasconcellos, Silvio Arruda (Veterinarski Arhiv, 2008)