Effects of Spirulina Feed Additive on Duodenal Tissue Structure in Peking Duck (Anas platyrhynchos). Biosaintifika: Journal of Biology & Biology Education, [S. l.], v. 17, n. 2, p. 327–338, 2025. DOI: 10.15294/biosaintifika.v17i2.26215. Disponível em: https://journal.unnes.ac.id/journals/biosaintifika/article/view/26215. Acesso em: 6 dec. 2025.