ROLE OF ZINC AND COPPER RATIO ON GROWTH IN PIGLETS . Indian Journal of Animal Production and Management, [S. l.], v. 31, n. 1-2, p. 8–10, 2015. Disponível em: https://www.journals.acspublisher.com/index.php/ijapm/article/view/7148. Acesso em: 8 oct. 2025.