JUDSON, H.; EDWARDS, G. Urinary nitrogen concentration from dairy heifers grazing kale supplemented with either plantain or perennial ryegrass baleage in winter. Journal of New Zealand Grasslands, [S. l.], v. 78, p. 99–102, 2016. DOI: 10.33584/jnzg.2016.78.525. Disponível em: https://www.nzgajournal.org.nz.myth.agency/index.php/JoNZG/article/view/525. Acesso em: 21 sep. 2026.