JACOB, SHIBU K; PHILOMINA, P T; RAMNATH, V. Influence of pregnancy and early lactation on the serum levels of iron, copper and, zinc in crossbred heifers*. The Indian Journal of Animal Sciences, Delhi, India, v. 73, n. 1, 2014. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/42190. Acesso em: 23 oct. 2025.