Yupingfeng polysaccharides enhances growth performance in Qingyuan partridge chicken by up‐regulating the mRNA expression of SGLT1 GLUT2 and GLUT5

摘要

The ban on the use of antibiotic in feed encouraged nutritionists to using alternatives to maintain growth performance and intestinal function of broilers. This study was conducted to evaluate the effects of Yupingfeng polysaccharides (YP) supplementation on growth performance and expression of SGLT1, GLUT2 and GLUT5 in Qingyuan partridge chicken. Experiment 1: a total of 540 chickens were randomly allocated to five groups with six replication. Dietary treatments were: (1) CON (control group), basal diet; (2) T1, CON + 0.5 g kg⁻¹ YP; (3) T2, CON + 1 g kg⁻¹ YP; (4) T3, CON + 2 g kg⁻¹ YP; (5) T4, CON + 4 g kg⁻¹ YP. Experiment 2, a total of 162 were randomly allocated to three groups with three replication. Dietary treatments were: (1) CON, basal diet; (2) T1, CON + 0.5 g kg⁻¹ YP; (3) T2, CON + 1 g kg⁻¹ YP. From days 1 to 14 and overall, chicken fed T1 diet had higher ADG. On day 42, there was increased villus height of jejunum in T1 group. On days 14 and 28, there was decreased villus height of duodenum and jejunum in T2 group. In duodenum, the expression of style="fixed-case">SGLT1 (days 21, 35 and 42), style="fixed-case">GLUT2 (days 7, 14, 21, 28, 35 and 42) and style="fixed-case">GLUT5 (days 7, 14, 21 and 28) was increased with style="fixed-case">YP supplementation. In jejunum, the expression of style="fixed-case">SGLT1 (days 7, 14, 21, 28 and 35), style="fixed-case">GLUT2 (days 14, 21, 28, 35 and 42) and style="fixed-case">GLUT5 (days 7, 14, 21, 28, 35 and 42) was increased with style="fixed-case">YP supplementation. In ileum, the expression of style="fixed-case">SGLT1 (days 7, 21, 35 and 42), style="fixed-case">GLUT2 (days 7, 14, 21 and 42) and style="fixed-case">GLUT5 (days 7, 14, 21, 28, 35 and 42) was increased with style="fixed-case">YP supplementation. Dietary style="fixed-case">YP supplementation improves growth performance and expression of style="fixed-case">SGLT1, style="fixed-case">GLUT2 and style="fixed-case">GLUT5 in intestine.