. 2023 Jul 11;102(10):102897. doi: 10.1016/j.psj.2023.102897

Table 8.

Effect of GRE on the concentration of indicator microorganisms in the ceca of broiler chicks (Log₁₀ CFU/g feces) at d 27.

Treatments¹	Total bacteria	E. coli	Lactobacillus	Bifidobacteria
CON	5.51^a	4.69^a	4.14^d	4.10^d
MX	4.68^bc	4.29^cd	4.51^c	4.68^bc
GRE-0.375%	4.89^bc	4.55^ab	5.13^a	5.08^a
GRE-0.75%	4.66^bc	4.35^abc	4.91^b	4.84^ab
GRE-1.5%	4.57^bc	4.15^cd	4.62^c	4.86^ab
GRE-3%	4.34^c	4.09^d	4.46^c	4.45^c
SEM	0.098	0.052	0.050	0.062
P-value	0.0001	0.0001	0.0001	0.0001

^a-d

Mean values bearing different superscript letters within a column are significantly different (P < 0.05). n = 12 birds per treatment.

Treatment CON consisted of chicks fed unmedicated corn–soybean meal (SBM) basal without GRE; Treatment MX consisted of chicks given unmedicated corn–SBM basal into which bacitracin methylene disalicylate (BMD) was added at 0.055 g/kg diet; Treatment GRE-0.375% consisted of chicks given unmedicated corn–SBM basal into which GRE was added at 0.375% level; Treatments GRE-0.75%, GRE-1.5%, and GRE-3% consisted of chicks that were given diets similar to GRE-0.375% consisted of chicks that were given diets similar to GRE1 at 0.75%, 1.5%, and 3%, respectively.