Heak C, Sukon P, Kongpechr S, Tengjaroenkul B, Chuachan K. Effect of Direct-fed Microbials on Intestinal Villus Height in Broiler Chickens: A Systematic Review and Meta-Analysis of Controlled Trials. Int. J. Poult. Sci. [Internet]. 2017 Sep. 15 [cited 2025 Sep. 22];16(10):403–414. Available from: https://ijpsjournal.org/index.php/ijps/article/view/2363