HU, Jiaying; CHEN, Hui; CHENG , Heng-Wei. Effect of Direct-fed Microbials, Bacillus subtilis, on Production Performance, Serotonin Concentrations and Behavioral Parameters in a Selected Dominant Strain of White Leghorn Hens. International Journal of Poultry Science, Pakistan, v. 17, n. 3, p. 106–115, 2018. DOI: 10.3923/ijps.2018.106.115. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/2394. Acesso em: 22 sep. 2025.