Viability of utilization of the air sterilization in the room maternity in swine farms - Soto, Francisco Rafael Martins; Matias, Daniel; Benites, Nilson Roberti; Melville, Priscilla Anne; Vasconcellos, Silvio Arruda; Coelho, Cideli de Paula; Azevedo, Sérgio Santos de (Veterinária e Zootecnia, 2009)