This book brings together interdisciplinary studies that explore the interactions between climate change, agriculture, and animal nutrition in environmentally sensitive regions. The chapters collectively emphasize the need for science-based strategies to ensure sustainable food production, resource efficiency, and resilience under changing climatic and nutritional conditions. The chapter Projected Temperature Changes under SSP Scenarios and Their Implications for Agriculture in Arid Zones: A Case Study of Biskra, Algeria examines future climate risks using scenario-based projections, highlighting potential impacts on agricultural productivity in arid environments. This environmental perspective is complemented by Whey as an Addition in the Diet and Its Effect on the Liver, which investigates the nutritional and physiological effects of dietary supplementation, contributing to improved animal health and feed utilization. The final chapter, Monogastric Nutrition and Water in Animal Nutrition, focuses on the critical relationship between feed composition and water use in animal production systems. Together, these chapters provide a concise yet integrated view of how climate analysis and nutritional science can inform sustainable agricultural and livestock management practices, offering valuable insights for researchers, practitioners, and policymakers alike.