VIEIRA, Marcos Vinícius et al. Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil. Semina: Ciências Agrárias, [S. l.], v. 44, n. 2, p. 767–780, 2023. DOI: 10.5433/1679-0359.2023v44n2p767. Disponível em: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/45086. Acesso em: 5 dec. 2025.