Table 1.

True digestibility and apparent digestibility in Wistar rats subjected to the standard diet AIN-93G (S, n = 6), AIN-93G+1 mL of water (SW, n = 6), AIN-93G+25 mg/kg tamarind trypsin inhibitor in 1 mL water (25 mg/kg TTI, n = 6) and protein-free diet (PF, n = 6) for 11 days. The results are expressed as the mean ± standard deviation in each group. Different lower case letters indicate p<0.05 between groups. Different upper case letters indicate p<0.05 between true digestibility and apparent digestibility. One-way ANOVA followed by Tukey's post-hoc test or Student's t-test was used.

Treatment	Urine nitrogen (%)	Fecal nitrogen (%)	True Digestibility (%)	Apparent Digestibility (%)
S	1.12	1.75	90.70±1.22aA	96.36±0.91aB
SW	1.15	1.69	91.10±1.02aC	96.68±2.03aD
TTI	1.18	1.68	89.88±0.94aE	92.58±1.38aE
PF	0.18	0.39	-	-