Supplementation of Ampelopsis grossedentata extract contributes to the improvement of intestinal health in swine

A total of 500 mg/kg AGE significantly increased the abundance of gut microbiota, enhanced the gut barrier, and modulated gut immunity. During the piglet phase, 500 mg/kg AGE increased the relative abundance of <i>Prevotella</i> (<i>p</i> < 0.05). During the growing-finishing phase, 500 mg/kg AGE increased the relative abundance of <i>unclassified_f__Lachnospiraceae</i> and <i>Bacteroides</i> (<i>p</i> < 0.05, <i>p</i> < 0.01). Overall, we recommended 500 mg/kg AGE as a routine addition dose for swine to improve porcine growth performance and intestinal health.