Table 8.

Least squares means (log₂-backtransformed) for mRNA abundance in the ileum of pigs fed diets containing different concentrations of standardized total tract digestible (STTD) Ca and STTD P for 21 d^a

Item	STTD Ca, %
	0.14	0.29	0.44	0.59	0.74
OCLN b,c
0.16% STTD P	0.570	0.574	0.507	0.514	0.535
0.33% STTD P	0.665	0.455	0.678	0.529	0.598
0.42% STTD P	0.474	0.502	0.597	0.553	0.522
0.50% STTD P	0.578	0.541	0.432	0.596	0.557
ZO1 d
0.16% STTD P	0.522	0.544	0.464	0.503	0.479
0.33% STTD P	0.518	0.502	0.499	0.472	0.453
0.42% STTD P	0.521	0.458	0.525	0.473	0.452
0.50% STTD P	0.476	0.478	0.481	0.504	0.440
CLDN1 e
0.16% STTD P	1.105	0.476	0.700	0.578	0.432
0.33% STTD P	0.526	0.850	0.361	0.425	0.488
0.42% STTD P	1.275	0.430	0.667	0.523	0.444
0.50% STTD P	1.493	1.114	0.821	0.560	0.620

^aData are least squares means of 6, 7, or 8 observations

^bResults indicated that abundance of OCLN could not be predicted using STTD Ca or STTD P

^cStandard error of the within treatment least squares means = 0.26

^dStandard error of the within treatment least squares means = 0.08

^eStandard error of the within treatment least squares means = 0.58