Silva CA da, Manteca X, Dias CP. Needs and challenges of using enrichment materials in the pig industry. Semina: Ciênc. Agrár. [Internet]. 2016 Feb. 29 [cited 2026 Apr. 4];37(1):525-36. Available from: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20394