Effect of a new device for sustained progesterone release on the progesterone concentration, ovarian follicular diameter, time of ovulation and pregnancy rate of ewes - Dias, Lilian Mara Kirsch; Barros, Marina Berrettini Paes de; Furtado, Priscila Viau; Sales, José Nélio de Sousa; Valentim, Renato; Santos, Fernanda Ferreira; Cunha Junior, Manoel Claudio da; Marino, Carolina Tobias; Oliveira, Cláudio Alvarenga de (Animal Reproduction Science, 2015)