Effects of supplementation with sweeteners on jejunal mRNA expression of taste receptors in broiler chickens. Data are presented as mean value ± SEM (n = 6). Values without the same letter (a, b) represent statistically significant differences (P < 0.05). Abbreviations: CON, broiler chickens fed a basal diet; STE, broiler chickens fed a basal diet supplemented with 250 mg/kg stevioside; SUC, broiler chickens fed a basal diet supplemented with 100 mg/kg sucralose; SAC, broiler chickens fed a basal diet supplemented with 600 mg/kg saccharin sodium; ggTAS1R1, Gallus gallus taste receptor family 1 member 1; ggTAS1R3, G. gallus taste receptor family 1 member 3; ggTAS2R1, G. gallus taste receptor family 2 member 1; ggTAS2R2, G. gallus taste receptor family 2 member 2; ggTAS2R7, G. gallus taste receptor family 2 member 7.