. 2021 Aug 4;12:715712. doi: 10.3389/fmicb.2021.715712

TABLE 4.

Effect of dietary TB on ileal and cecal bacterial populations (log10 CFU/g fresh digesta) in broilers.

Item	Bacteria	Control	TB1	TB2	TB3	TB4	Pooled SEM	Treatment P-value	Liner P-value	Quadratic P-value
21 days
Ileal digesta	Bacillus	4.76^b	4.89^b	5.28^a	5.35^a	5.43^a	0.04	0.00	0.30	0.07
	Lactobacillus	4.53^c	5.19^b	5.24^b	5.62^b	6.35^a	0.08	0.00	0.06	0.05
Cecal digesta	Bacillus	6.62^b	6.71^b	6.77^b	7.33^a	7.54^a	0.05	0.00	0.44	0.34
	Lactobacillus	6.87^b	6.96^ab	7.10^ab	7.15^ab	7.36^a	0.02	0.00	0.61	0.06
	Coliforms	7.49^a	6.90^b	6.61^b	6.46^b	6.47^b	0.05	0.05	0.43	0.07
42 days
Ileal digesta	Bacillus	3.95^b	4.16^ab	4.25^ab	4.41^ab	4.74^a	0.03	0.04	0.19	0.19
	Lactobacillus	4.03^c	4.18^bc	4.51^ab	4.71^ab	4.96^a	0.04	0.00	0.10	0.02
Cecal digesta	Bacillus	6.65	6.75	6.90	6.98	6.91	0.02	0.00	0.52	0.02
	Lactobacillus	5.93^b	6.15^b	6.20^ab	6.60^a	6.63^a	0.04	0.00	0.27	0.10
	Coliforms	7.14^a	7.00^a	6.76^ab	6.50^b	6.32^b	0.04	0.01	0.82	0.07

SEM, standard error of the mean; TB, tributyrin. Control = basal diet; TB1 = basal diet supplemented with 230 mg/kg TB; TB2 = basal diet supplemented with 460 mg/kg TB; TB3 = basal diet supplemented with 920 mg/kg TB; TB4 = basal diet supplemented with 1,840 mg/kg TB. ^a,b,cMean values within a row with unlike superscript letters were significantly different (P < 0.05).