Dietary supplementation with Rehmannia glutinosa catalpol improves broiler performance by regulating intestinal immune microenvironment. - Mu, Zhaokun; Guo, Liangxing; Zhou, Yanzhou; Nie, Furong; Li, Zhichao; Liu, Huan; Cui, Junwei; Huang, Minghai; Yang, Yi (Italian Journal of Animal Science, 2024)