This research synthesizes findings from life cycle assessment (LCA) studies on broiler production systems, providing a comprehensive analysis of the environmental impacts associated with this industry. Various system boundaries, including cradle to farm gate, cradle to slaughterhouse, and cradle to grave approaches, were employed, alongside different functional units such as 1kg of live weight broiler chicken and 1kg of consumed chicken meat. The life cycle inventory analysis (LCI) incorporated primary and secondary data on inputs and outputs throughout the broiler production process. Key findings identified feed production, particularly soybean cultivation, as a major environmental burden, significantly contributing to global warming, acidification, eutrophication, and cumulative energy demand. Other notable impacts arose from energy use, waste management, and transportation. The studies explored the potential of low-protein diets and alternative production systems, such as organic or positive pressure systems, in reducing environmental impacts. Sensitivity and scenario analyses emphasized the importance of variables like feed intake, slaughter weight, and emissions from feed and soybean production. Strategies including litter composting, litter incineration, and energy-efficient systems were suggested for further impact reduction. Allocation methods such as mass and economic allocation facilitated precise distribution of environmental burdens across different production stages. The research highlights critical areas for improvement and informs sustainable practices within broiler production, calling for continued investigation into the long-term sustainability of alternative systems and effectiveness of improvement strategies.