Genetics is the essential factor for the precocious puberty in Nellore heifers - Ferraz, M. V. C; Polizel, D. M; Miszura, A. A; Oliveira, G. B; Bertoloni, A. V; Sartori Filho, Roberto; Nogueira, G. P; Pires, Alexandre Vaz (Journal of Animal Science, 2017)