MION, Bruna et al. J-Synch protocol associated with estrus detection in beef heifers and non-lactating cows. Medicina Veterinária, [S. l.], v. 13, n. 2, p. 269–274, 2020. DOI: 10.26605/medvet-v13n2-3089. Disponível em: https://www.journals.ufrpe.br/index.php/medicinaveterinaria/article/view/3089. Acesso em: 5 dez. 2025.