Selenium levels in soil, grass and sheep: Inf luence of Se supplementation on the IgG concentration in pregnant ewes and lambs. TERRA LATINOAMERICANA, [S. l.], v. 40, 2022. DOI: 10.28940/terra.v40i0.950. Disponível em: https://terralatinoamericana.org.mx/index.php/terra/article/view/950. Acesso em: 13 jun. 2026.