Simple Summary Developing new antibiotic substitutes to promote pig growth and health, as well as new feed to improve feed utilization and reduce manure production during the breeding process, have become important ways to solve the current dilemma and promote the pig industry. In this study, we have documented that adding a 2% and 3% digestion-promoting fermented Chinese herbal formula to feed effectively promoted the growth of growing pigs, improved serum immune and antioxidant activities, ameliorated the structure of colonic microbiota, and altered the composition of metabolites in colon co...
