. 2019 Jan 29;4(1):e00261-18. doi: 10.1128/mSystems.00261-18

TABLE 3.

Differences in mucosal permeability and response to luminal glucose addition in distal jejunum of low- and high-RFI broiler chickens fed either ad libitum or restrictively^a

Parameter	Value^b				SEM	P value
	Ad libitum feeding		Restrictive feeding			P value
	Low RFI	High RFI	Low RFI	High RFI		FL	RFI	FL × RFI
Avg electrophysiological variables
I_sc (µA/cm²)	2.98	−0.29	−0.83	−0.97	1.029	0.036	0.107	0.137
R_T (W/cm²)	0.66	0.58	0.69	0.60	0.034	0.495	0.022	0.912
FITC (nmol/cm² × h)	0.0041	0.0055	0.0045	0.0032	0.0011	0.400	0.975	0.259
HRP (pmol/cm² × h)	0.0094	0.0014	0.0019	0.0056	0.0038	0.654	0.577	0.130

Glucose response^c
Basal I_sc (µA/cm²)	6.53	5.66	4.74	4.43	0.817	0.073	0.480	0.733
ΔI_sc	2.16	3.11	2.49	2.55	0.559	0.841	0.372	0.431
Basal R_T (W/cm²)	0.58	0.54	0.59	0.57	0.031	0.628	0.270	0.837
ΔR_T	3.65^b	7.31^a	5.12^b	4.33^b	1.048	0.475	0.180	0.041

Data are presented as least-squares means and pooled SEM. n = 7 per FL group, RFI rank, and sex except for n = 8 high-residual-feed-intake (RFI) ad libitum females. RFI was calculated for the experimental period from 9 to 30 days posthatch. FL, feed intake level; FITC, fluorescein 5(6)-isothiocyanate; HRP, horseradish peroxidase.

Different letters within a row indicate significant differences (P ≤ 0.05).

Data represent responses to glucose addition to reach a final chamber concentration of 5 mmol/liter. ΔI_sc, difference between the maximal I_sc value obtained 2 min after glucose addition and the basal value determined 1 min before glucose addition; ΔR_T, difference between the basal glucose transport (GT) value determined 1 min before glucose addition and the R_T value obtained 2 min after glucose addition.