OTT, R. S.; BRETZLAFF, K. N.; CMARIK, G. F. Field study of the effects of zeranol, implanted at the time of breeding, on weight gain and pregnancy rate of beef heifers. The Bovine Practitioner, [S. l.], v. 1983, n. 18, p. 104–106, 1983. DOI: 10.21423/bovine-vol1983no18p104-106. Disponível em: https://bovine-ojs-tamu.tdl.org/bovine/article/view/2489. Acesso em: 14 jul. 2024.