Cryopreservation of boar semen in 0.5mL straws at low spermatozoa concentration is better than high concentration to maintain sperm viability

di Gisele M. Ravagnani, Mariana A. Torres, Diego F. Leal, Simone M.M.K. Martins, Frederico O. Papa, José A. Dell’Aqua Junior, Marco A. Alvarenga, André F.C. Andrade