The effect of time post infection (PI, 7 vs. 10 D), presence of butyric acid glycerol esters in diet (+BE vs. −BE), infection with Eimeria maxima (+EM vs. −EM), and their interactions on relative bacteria abundance in chicken ileal content (IlC) (A–D), ileal scrapings (IlS) (E–I), cecal content (CeC) (J–M), and cecal scrapings (CeS) (N–V). When 3-factor interaction was nonsignificant (P > 0.05), 2-factor interaction was considered followed by evaluation of main factors. Only statistically (P < 0.05) significant data are shown. Abbreviations: BE, birds receiving 0.25% butyric acid glycerol esters (BE) in a diet; BE + EM, birds receiving 0.25% BE in a diet and infected with EM, 7 and 10 D PI; C, control birds; EM, birds infected with Eimeria maxima (EM); PI, postinfection. Different letters denote statistically significant (P < 0.05) differences between treatment groups.