Mutian Niu's research focuses on nutritional strategies to enhance nutrient utilization efficiency, reduce environmental impact, and improve cow welfare, thereby contributing to the long-term sustainability of dairy farming systems. His work bridges experimental findings with practical applications, providing farmers and industry stakeholders with data-driven insights to optimize farm profitability while advancing environmental sustainability. With expertise in ruminant nutrition, statistics, and data science, he is well positioned to conduct translational research that links fundamental discoveries with real-world applications. His current research program explores dietary strategies for enteric methane mitigation and pioneers non-invasive exhalomics and breathomics approaches to deepen our understanding of rumen function and physiological responses in dairy cows.