Evaluation of zinc gluconate, either associated or not to dimethyl sulfoxide, as contraceptive method for male dogs - Soto, Francisco Rafael Martins; Viana, Wilson Gonçalves; Sousa, A. J; Pinheiro, Sonia Regina; Mucciolo, Raul Gastão; Hosomi, F. Y. M; Azevedo, Sérgio Santos de; Dias, Ricardo Augusto (Animal Reproduction, 2007)