Livestock food systems are complex and play an important role in societies by providing food, income, and nutrition. A value chain approach can provide a better understanding of these systems by mapping the flows of products, nutrients, and hazards across the entire system from production to consumption. Recent studies in Nairobi have shown gaps in understanding pathogen transmission dynamics and disconnects between active food systems and nutrition of the urban poor. Expanding such analyses to other locations can improve policy by clarifying these complex systems and focusing on what is important to measure like human behavior, governance, and ensuring food provides adequate nutrition.