This study investigates the development of the cecal microbiome in broiler chickens from hatch to market age, highlighting the significant role of age in shaping microbial communities. Using advanced 16S rRNA sequencing, researchers tracked changes in gut bacteria, revealing that the microbiome becomes more complex and stable as the birds mature, particularly between 28 and 42 days of age. While some differences were observed between male and female broilers, age was determined to be the primary factor influencing microbial diversity and composition, with early life being the most critical period for establishing a healthy gut microbiome.#InterpretiveSummary