Nusairat B, McNaughton J, Tyus J, Wang JJ. Combination of Xylanase and Bacillus Direct-fed Microbials, as an Alternative to Antibiotic Growth Promoters, Improves Live Performance and Gut Health in Subclinical Challenged Broilers. Int. J. Poult. Sci. 2018;17(8):362–366. doi:10.3923/ijps.2018.362.366