This study investigates the effects of liquid and microencapsulated bioherbal additives on broiler chickens, highlighting their potential as sustainable alternatives to antibiotic growth promoters. Conducted with 320 Lohman MB 202 broiler chicks over 35 days, the research found that these additives, which include phytogenic compounds and beneficial microbes, significantly improved growth performance, intestinal morphology, and gut microbiota balance. Notably, the microencapsulated form showed enhanced stability and delivery of bioactive compounds, leading to better feed efficiency and overall health benefits for the birds.#InterpretiveSummary