Fig. 3

Effect of SPCI on the expressions levels of critical genes related to nutrient digestion and absorption

DMT1, divalent metal transporter-1(A); ZnT1, zinc transporter-1(B); GLUT2, glucose transporter-2(C); SGLT1, sodium glucose transport protein-1(D); PePT1, peptide transporter-1(E); CAT1, amino acid transporter-1(F); a,b,c Mean values with different letters on vertical bars indicate significant differences (P < 0.05). T1, control (basal diet); T2, the basal diet containing 50 mg/kg SPCI ; T3, the basal diet containing 75 mg/kg SPCI ; T4, the basal diet containing 100 mg/kg SPCI; T5, the basal diet containing 125 mg/kg SPCI